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Alkynes with

Tellurium tetrachloride and acetylenes react in carbon tetrachloride regiospecifically and stereoselectively to produce (Z)-2-chlorovinyl tellurium trichlorides.  [Pg.308]

Similarly prepared were the following tellurium trichlorides.  [Pg.308]

2-chloro-2-phenylethenyl l-methyl-2-chloro-2-phenylethenyl J-ethyl-2-chloro-2-phenylethenyl  [Pg.308]


Numerous applications have been reported. A derivative of the (alkyn-1-yl)nucleosides 295. which have anticancer and antiviral activities, has been synthesized by this reaction. They are also used as chain-terminating nucleosides for DN.A. sequencing[l98,199]. In this reaction, use of DMF as the solvent is most important for successful operation[200]. Only the alkenyl bromide moiety in 2-bromo-3-aceto.xycycloheptene (296) reacts with alkynes without attacking the allylic acetate moiety[201]. [Pg.169]

Chlorobenzenes activated by coordination of Cr(CO)3 react with terminal alkynes[253). The 1-bromo-1,2-alkadiene 346 reacts with a terminal alkyne to afford the alka-l,2-dien-4-yne 347[254], Enol tritlates are used for the coupling with terminal alkynes. Formation of 348 in the syntheses of ginkgolide[255] and of vitamin D are examples[256] Aryl and alkenyl fluorides are inert. Only bromide or iodide is attacked when the fluoroiodoalkene 349 or fluoroiodoar-ene is subjected to the Pd-catalyzed coupling with alkynes[257-259]. [Pg.176]

The benzene derivative 409 is synthesized by the Pd-catalyzed reaction of the haloenyne 407 with alkynes. The intramolecular insertion of the internal alkyne, followed by the intermolecular coupling of the terminal alkyne using Pd(OAc)2, Ph3P, and Cul, affords the dienyne system 408, which cyclizes to the aromatic ring 409[281]. A similar cyclization of 410 with the terminal alkyne 411 to form benzene derivatives 412 and 413 without using Cul is explained by the successive intermolecular and intramolecuar insertions of the two triple bonds and the double bond[282]. The angularly bisannulated benzene derivative 415 is formed in one step by a totally intramolecular version of polycycli-zation of bromoenediyne 414[283,284],... [Pg.184]

Interestingly. 4-hydroxythiazoles (11) react like the 4-hydroxy-THISs with alkynes and alkenes (Scheme 12) (20). further demonstrating the usefulness of 4-hydroxythiazole derivatives for the preparation of 2-pyridones and thiophenes. [Pg.7]

Again, it is noteworthy that 4-substituted 5-hydrdxythiazoles (24) react like 5-hydroxy-THISs with alkynes to give pyrroles and sometimes with alkenes to give exo-cycloadducts (Scheme 22). In the latter case other processes compete with the cycloaddition, becoming dominant when 24 is treated with azo-compounds, enamines, or heterocumulenes (31). [Pg.11]

The 5-acylamino-THISs react with alkynes in a way already exemplified for 5-hydroxy-THISs. Pyrroles are formed under elimination of isothiocyanate (Scheme 29) (37). 5-Acylamino-THISs are readily bromi-nated in the 4-position (21). [Pg.14]

AUylic organoboranes react via cyclic transition states not only with aldehydes and ketones, but also with alkynes, aHenes, and electron-rich or strained alkenes. Bicyclic stmctures, which can be further transformed into boraadamantanes, are obtained from triaHyl- or tricrotylborane and alkynes (323,438,439). [Pg.321]

Nitroparaffins and HBF react with alkynes through conjugate addition of a proton and the nitronate ion at the triple bond as illustrated by nitromethane and 5-decyne (53). [Pg.101]

The reaction of /V-henzylideneaniline (19) with alkynes leads to quinolines substituted in the heterocychc ting (56). Except for benzyhdenes bearing nitro substituents, the reaction occurs in good yield and under mild conditions. The method appears capable of elaboration. [Pg.392]

Using a number of other aldehydes, more compHcated products result. Stmcture (2) was also found to react with alkynes in the presence of copper(I) chloride to give furans ... [Pg.134]

Anhydro-3-hydroxy-2-phenylthiazolo[2,3-6]thiazolylium hydroxide (407) underwent ready thermal reaction with alkynic and alkenic dipolarophiles in refluxing toluene. With the former dipolarophile sulfur was lost from the intermediate 1 1 cycloadduct (408) to give the substituted 5H-thiazolo[3,2- i]pyridin-5-ones (409). With the latter, the intermediate (410) lost H2S, also forming (409). [Pg.150]

Pyrazoles are formed when the diazo compounds react with alkynes or with functionalized alkenes, viz. the enols of /3-diketones. Pyrazolenines (353 Section 4.04.2.2.1) are isolated from disubstituted diazomethanes. Many pyrazoles, difficult to obtain by other methods, have been prepared by this procedure, for example 3-cyanopyrazole (616) is obtained from cyanoacetylene and diazomethane (7iJCS(C)2i47), 3,4,5-tris(trifiuoromethyl)pyrazole (617) from trifluorodiazoethane and hexafluoro-2-butyne (8lAHC(28)l), and 4-phenyl-3-triflylpyrazole (618 R =H) from phenyltriflylacetylene and diazomethane (82MI40402). An excess of diazomethane causes iV-methylation of the pyrazole (618 R = H) and the two isomers (618 R = Me) and (619) are formed in a ratio of 1 1. [Pg.282]

Alkynes are often less accessible and less stable than the corresponding alkenes. (2) The generally slower reaction rate with alkynes usually leads to lower yields. (3) Alkenes provide better regiospecificity than alkynes because alkenes have more variation in substitution and some substituents have a pronounced directional effect. [Pg.69]

Reaction of benzonitrile A-oxide with alkynic phosphinate (343) gave exclusively 5-phosphinylisoxazole (344), whereas reaction with enamine phosphinate (345) gave the otherwise inaccessible 5-unsubstituted 4-phosphinylisoxazole (346) (80JOC529). [Pg.69]

Chlorination of sodium cyanodithioformate gives 3,4-dichloro-5-cyanoisothiazole (227), probably via the isothiazolodithiine (226) (72AHC(l4)l). The thienoisothiazole (228) undergoes cycloaddition with alkynic esters to give adducts such as compound (229), which... [Pg.172]

S-group removal from, S, 445 oxidation, S, 445 reactions, S, 443-445 reactivity, 5, 375-376 synthesis, S, 493 Imidazoline-2-thiones Mannich reaction, 5, 405 reactions, 5, 102, 443-444 with alkynes, 5, 444 synthesis, S, 493... [Pg.658]

Oxazolium hydroxide, anhydro-5-hydroxy-aromaticity, 6, 184 cycloaddition reactions, 6, 209 dimerization, 6, 207 1,3-dipolar cycloaddition reactions with alkynes, 6, 210 electrophilic reactions, 6, 207 mesoionic reactions, 6, 188 reactions, 6, 206-211 synthesis, 6, 225-227... [Pg.729]


See other pages where Alkynes with is mentioned: [Pg.22]    [Pg.60]    [Pg.171]    [Pg.488]    [Pg.491]    [Pg.494]    [Pg.261]    [Pg.264]    [Pg.74]    [Pg.101]    [Pg.146]    [Pg.69]    [Pg.86]    [Pg.90]    [Pg.536]    [Pg.538]    [Pg.539]    [Pg.546]    [Pg.616]    [Pg.617]    [Pg.619]    [Pg.634]    [Pg.643]    [Pg.683]    [Pg.684]    [Pg.684]    [Pg.684]    [Pg.721]    [Pg.728]    [Pg.729]    [Pg.765]   
See also in sourсe #XX -- [ Pg.1458 ]




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1.2- Dihydropyridine 2 + 2] cycloaddition with alkynes

2-Iodothiophene, reaction with terminal alkynes

3- Aminobenzo cycloaddition reactions with activated alkynes

3- benzoic acid reaction with alkynes

Acetylides, cross-coupling with terminal alkynes

Acid chlorides, reaction with alkyne anions

Acids reaction with alkynes

Aldehydes, reaction with alkyne anions

Alkenes, -cycloaddition with alkynes

Alkenes, reaction with alkynes

Alkenyl halides reaction with 1-alkynes

Alkyl with mono-substituted alkynes

Alkylboranes reaction with alkynes

Alkylidyne complexes, reactions with alkyne

Alkyne Cp2Mo2 3 with

Alkyne Insertions with Nickel-Allyl Complexes

Alkyne alcohols, reduction with

Alkyne allyl alcohols, rearrangements with

Alkyne anions reaction with alkyl halides

Alkyne anions reaction with aryl halides

Alkyne anions reaction with epoxides

Alkyne complexes exchange reactions with alkynes

Alkyne complexes reactions with donor ligands

Alkyne complexes with carbon monoxide

Alkyne reaction with HBr

Alkyne reaction with NaNH

Alkyne reaction with lithium

Alkyne reactions with cobalt carbonyl complexes

Alkyne reduction with

Alkyne, reaction with metal hydride

Alkynes 2+2]-cycloaddition with ketenes

Alkynes Diels-Alder reactions with

Alkynes Hydrocarbons with Triple Bonds

Alkynes Sonogashira coupling with

Alkynes allenyl complexes, reaction with

Alkynes benzannulations with

Alkynes complex with hexacarbonyldicobalt

Alkynes complex with mercury

Alkynes conjugate reactions with nucleophiles

Alkynes coupling reactions with alkenyl bromides

Alkynes coupling with

Alkynes coupling with carbene complexes

Alkynes coupling, with heterocycles

Alkynes cross metathesis with alkenes

Alkynes cycloaddition with

Alkynes cycloaddition, with azide

Alkynes cyclotrimerization with nitriles

Alkynes deprotonation with strong base

Alkynes directive effects with reaction

Alkynes elimination with boranes

Alkynes ene reaction with formaldehyde

Alkynes haloarenes, reaction with

Alkynes internal, 6 + 2-cycloaddition with

Alkynes intramolecular cyclization with

Alkynes intramolecular reactions, with arenes

Alkynes mercuric acetate, reaction with

Alkynes other reactions associated with

Alkynes palladium-catalyzed reaction with alkenyl halides

Alkynes rate constants with

Alkynes reaction with Dibal

Alkynes reaction with Grignard reagents

Alkynes reaction with HTIB

Alkynes reaction with alkoxycarbene complexes

Alkynes reaction with amines

Alkynes reaction with arenes

Alkynes reaction with azides

Alkynes reaction with boranes

Alkynes reaction with bromine

Alkynes reaction with carbene complexes

Alkynes reaction with carbenes

Alkynes reaction with carboxylic acids

Alkynes reaction with cuprates

Alkynes reaction with dicobalt octacarbonyl

Alkynes reaction with imides

Alkynes reaction with iodine

Alkynes reaction with nitrile oxides

Alkynes reaction with organocopper reagents

Alkynes reaction with ozone

Alkynes reaction with strong bases

Alkynes reaction with water

Alkynes reaction with, phosgene

Alkynes reactions with Fischer carbene complexes

Alkynes reactions with alcohols

Alkynes reactions with carbon monoxide

Alkynes reactions with halogens

Alkynes reactions with metal atoms

Alkynes reactions with nitrone

Alkynes reactions with organic halides

Alkynes rearrangements with

Alkynes reduction with lithium aluminium

Alkynes reduction with sodium/ammonia

Alkynes reductive coupling with carbon dioxide

Alkynes with Halogens

Alkynes with Hydrogen Halides

Alkynes with carbonyl compounds

Alkynes with metal hydrides

Alkynes with metal ions

Alkynes with nitrile oxide

Alkynes, -complexes with

Alkynes, -cycloaddition with cyclopropanes

Alkynes, 1-aminoreaction with nitriles

Alkynes, anions, reaction with

Alkynes, annulation with Fischer carbenes

Alkynes, chlororeaction with tertiary enolates

Alkynes, cyclization with 2-haloaniline

Alkynes, cyclization with 2-iodobenzoic acids

Alkynes, cycloaddition with cyclotrimerization

Alkynes, cycloaddition with diaryl

Alkynes, cycloaddition with dienes

Alkynes, metal mediated reaction with

Alkynes, reaction with azadienes

Alkynes, reaction with catecholborane

Alkynes, reaction with chloroborane

Alkynes, reaction with dibromoborane

Alkynes, reaction with organolithium reagents

Alkynes, reaction with platinum complexes

Alkynes, reaction with pyrrole

Alkynes, reaction with pyrrole derivatives

Alkynes, reaction with thexylborane

Alkynes, reaction with vinyl bromides

Alkynes, reactions with carbonyl clusters

Alkynes, reactions with transition metal complexes

Alkynes, reduction with metals

Alkynes, stannylreactions with steroidal aldehydes

Alkynes, stannylreactions with steroidal aldehydes Cram selective

Alkynes, with alcohols

Alkynes, with alcohols Sonogashira

Alkynyl cyanides, reactions with alkynes

Allenes, bromocoupling reactions reaction with alkynes

Allenylidene reactions with alkynes

Allyl cross metathesis with alkynes

Allyl cyanides, reactions with alkyne

Aluminum reaction with alkynes

Amines with alkynes

Ammonium salts, trialkylreaction with activated alkynes

Annulation of Anilines and Related Compounds with Alkynes

Aryl halides with terminal alkynes

Aryl triflates with terminal alkynes

Aziridines reaction with alkynes

Azomethine with electron-deficient alkynes

Benzannulation of Enynes with Alkynes

Bonds reaction with alkynes

Borane complexes reaction with alkynes

Borane reaction with alkynes

Borane, electrophilicity reaction with alkynes

Borane, with silyl-alkynes

Boranes chloride, reaction with alkynes

Boranes with alkynes

Boranes, vinylreactions with organometallic compounds via hydroboration of 1-alkynes

Boranes, with alkynes, reduction

Boranes, with alkynes, reduction acids

Boranes, with alkynes, reduction peroxide

Boranes, with metal alkyne

Boron hydride, reaction with alkynes

Butyllithium, reaction with alkynes

Carbene complexes with alkynes

Carbene with alkynes

Carbenes with alkynes

Carbenes, generation with alkynes

Carbenoids reactions with alkynes

Carbocations with alkynes

Carbocyclizations with substituted alkynes

Carbon coupling with alkynes

Carbon dioxide alkenes/alkynes with

Carbon polymerization with alkynes

Carbonyls reaction with alkynes

Carbyne complexes, reactions with alkyne

Catecholborane with alkynes

Cobalt, complexes with alkynes

Cocyclization arynes with alkynes

Conjugate Addition with Terminal Alkynes

Copper complexes with alkynes

Copper, germylreaction with alkynes

Coupling arylboronic acids with alkynes

Coupling of Alkynes with Alkenes

Coupling of acid chlorides with terminal alkynes

Coupling terminal alkynes with

Couplings of Alkynes with Aldehydes

Cp2Mo2 with alkynes, reaction

Cross-coupling Reactions of Terminal Alkynes with Organic Halides

Cross-coupling with alkynes

Cuprous salts, reaction with alkynes

Cyanoketenes with alkynes

Cyclization with Alkynes

Cyclization, radicals with alkynes

Cycloaddition, of azides with alkynes

Cycloadditions reactions with, alkenes alkynes

Cycloadditions with Strained or Activated Alkynes

Cycloadditions with alkynes

Cyclobutadienes reactions with alkynes

Cyclobutenones with alkynes

Cyclocotrimerization of Alkynes with Nitriles to Form Pyridines

Cyclocotrimerizations of Alkynes with Other Unsaturated Molecules and Related Reactions

Cyclopentadienyl carbonyl complexes with alkynes

Cyclotrimerization of alkynes with nitriles

Cyclotrimerization with alkynes

Dibromoborane, with alkynes

Dichlorocarbene, reactions with alkynes

Dicyclohexylborane, reaction with alkynes

Diselenides, reactions with alkynes

Disulphides, reactions with alkynes

Electrophiles alkyne reactions with

Enamines cycloadditions with alkynes

Enamines reactions with alkynic esters

Enamines with alkynic esters

Enamines with electrophilic alkynes

Enol esters, from alkynes with carboxylic acids

Enol esters, from alkynes with ketones

Epoxide with alkyne

Esters, alkynic reaction with allylic alcohols

Ethylene cross metathesis with alkynes

Ethylmagnesium bromide reaction with alkynes

Gallium reactions with alkynes

Gold complexes with alkynes

Gold-Catalyzed Reaction of Indoles with Alkynes

Grignard reagents with alkynes

Group Frequencies Associated with Alkynes

Halides, alkyl reaction with alkynes

Halides, vinyl reaction with alkynes

Heck reaction with alkynes

Heteroaryl halides, cross-coupling with alkynes

Hydride, diisobutylaluminum reaction with alkynes

Hydrides reactions with alkynes

Hydrobromination of alkynes with

Imines reactions with alkynes

Imines with alkynes

Imines with terminal alkynes

Iminium ions reactions with alkynes

Iminoboranes with alkynes

Indolizine, 18+2] -cycloaddition with alkyn

Intermolecular with alkyne

Internal alkynes with alkyl halides

Internal alkynes, cross-coupling with

Intramolecular Acylpalladation Reactions with Alkenes, Alkynes, and Related Unsaturated ompounds

Intramolecular Reactions with Alkenes and Alkynes

Intramolecular with alkynes

Iron compounds reactions with alkynes

Isocyanates with alkynes

Isocyanates, reaction with alkynes

Isoquinolines reaction with activated alkynes

Isoquinolones, annulation, with alkynes

Ketones alkyne anion reacting with

Ketones, reaction with alkyne anions

Ketoximes. reaction with alkynes

Ketyls reactions with alkynes

LiAlH4, reaction with alkyne-alcohols

Manganese, alkylpentacarbonylreaction with alkynes

Mechanism alkyne reduction with

Mercuric salts, reaction with alkynes

Mercury reactions with alkynes

Metal mediated coupling with alkynes

Metal-free Methods with Terminal Alkynes

Metal-mediated Schmidt Reactions of Alkyl Azides with Alkenes and Alkynes

Metallacyclobutane complexes reactions with alkynes

Metallacyclopentadienes reactions with alkynes

Metathesis with alkynes

Molybdenum complexes reaction with alkynes

Molybdenum reaction with alkynes

Niobium complexes reactions with alkynes

Nitrones reactions with alkynes

Octacarbonyldicobalt reactions with alkynes

Osmium carbonyl clusters with alkynes

Oxidative internal alkynes with benzoic acids

Ozone with alkynes

Ozone, preparation reaction with alkynes

Palladium formation with alkynes

Palladium-Catalyzed Carbon-Heteroatom Bond Formation with Alkynes

Pentacarbonyliron reactions with alkynes

Phenols reactions, alkyne derivatives with

Phosphine, trialkylreaction with alkynes

Phosphines, reactions with alkynes

Pinacol coupling reactions with alkynes

Platinum reaction with alkynes

Polymers with pendant alkyne

Polymers with pendant alkyne groups

Potassium permanganate alkynes with

Propargyl esters with terminal alkynes

Pyrroles reaction with alkynes

RXN4 Cross-Coupling of Terminal Alkynes with RX Derivatives

Radicals with alkynes

Radicals, coupling reactions with alkynes

Reaction of Alkynes with Organic Halides

Reaction of Simple Aldehydes or Ketones with Alkynes

Reaction of alkynes with

Reaction with alkenes and alkynes

Reaction with alkynes

Reactions of Enones with Alkynes

Reactions of Enynes with Alkynes

Reactions of cyclic alkynes with metal compounds

Reactions with electron-deficient alkynes

Related reactions with alkynes

Rhodium alkynes titanium with

Rhodium(I)-Catalyzed Asymmetric Hydroacylation of Olefins and Alkynes with Aldehydes

Ruthenium carbonyl clusters with alkynes

Ruthenium cyclization with alkynes

Ruthenium, alkyne-bridged clusters with alkynes

Ruthenium-catalyzed synthesis cyclization with alkynes

Samarium complexes reaction with alkynes

Sandro Cacchi and Giancarlo Fabrizi 6 Carbopalladation of Alkynes Followed by Trapping with Electrophiles

Silver complexes with alkynes

Sodium amide, reaction with alkynes

Sodium reaction with alkynes

Stille coupling with alkynes

Sulfur dichloride, reaction with alkynes

Tandem with alkynes

Tantalum complexes reactions with alkynes

Tellurium, reactions with alkynes

Terminal alkynes coupling with aryl iodides/bromides

Terminal alkynes with Group 9 transition metals

Terminal alkynes with alkyl halides

Terminal alkynes, cross-coupling with

Terminal alkynes, incompatibilities with

Titanium complexes with alkynes

Transition metal complexes with alkynes

Triazines reaction with alkynes

Trifluoroacetic acid reaction with alkynes

Trifluoromethanesulfonic acid reaction with alkynes

Triosmium complexes with alkyne ligands

Triruthenium complexes with alkyne ligands

Tris silane with alkyne

Trithiazyl trichloride, reactions with alkynes

Tungsten complexes with alkynes

Vinyl halides from alkynes reacting with acids

Vinyl halides, cross-coupling with alkynes

Water, acyl addition with alkynes

With Alkenes and Alkynes

With alkynes, metal

With alkynes, metal catalyzed

Zinc halides, allylreactions with silylated alkynes

Zinc, bromo reaction with alkynes

Zirconium, chlorobis hydrozirconation of alkynes with

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