Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Arylation compounds

It is a colourless gas which decomposes on heating above 420 K to give metallic tin, often deposited as a mirror, and hydrogen. It is a reducing agent and will reduce silver ions to silver and mercury(II) ions to mercury. SnSn bonding is unknown in hydrides but does exist in alkyl and aryl compounds, for example (CH3)3Sn-Sn(CH3)3. [Pg.177]

Dienes and allylarcncs can be prepared by the Pd-catalyzcd coupling of allylic compounds with hard carbon nucleophiles derived from alkenyl and aryl compounds of main group metals. Allylic compounds with various leaving groups can be used. Some of them are unreactive with soft nucleophiles, but... [Pg.345]

The aryl compounds are unstable substances which decompose on standing and are hydrolyzed ia moist air. The chlorides are readily prepared by the actioa of hydrochloric acid oa the corresponding arylstibonic acids. Tetraacetatopheaylantimoay [116122-86-27], C24H2yOgSb, has beea prepared (168) ... [Pg.209]

Cesium forms simple alkyl and aryl compounds that are similar to those of the other alkah metals (6). They are colorless, sohd, amorphous, nonvolatile, and insoluble, except by decomposition, in most solvents except diethylzinc. As a result of exceptional reactivity, cesium aryls should be effective in alkylations wherever other alkaline alkyls or Grignard reagents have failed (see Grignard reactions). Cesium reacts with hydrocarbons in which the activity of a C—H link is increased by attachment to the carbon atom of doubly linked or aromatic radicals. A brown, sohd addition product is formed when cesium reacts with ethylene, and a very reactive dark red powder, triphenylmethylcesium [76-83-5] (C H )2CCs, is formed by the reaction of cesium amalgam and a solution of triphenylmethyl chloride in anhydrous ether. [Pg.375]

Another source of C-unsubstituted derivatives are o-aminopyridine aldehydes e.g. 216 - 217) (60JCS1370), and the corresponding ketones may be used to furnish C-aryl compounds (71GEP2051013). [Pg.226]

Alkylisothiazolium salts (61) undergo N—S bond cleavage when treated with hydrogen sulfide or thiophenol to form acyclic products (62), but 2-aryl compounds give 1,2-dithioles (63 or 64 Scheme 9) (75SST(3)54l, 77SST(4)339). [Pg.150]

One other feature of the data in Table 10.10 is worthy of further comment Notice that alkyl substituted acylium ions exhibit a smaller ortho para ratio than the various arpyl systems. If steric factors were dominating the position selectivity, one would expect the opposite result A possible explanation for this feature of the data could be that the aryl compounds are reacting via free acylium ions, whereas the alkyl systems may involve more bulky acyl chloride-catalyst complexes. [Pg.586]

The results in the ionic liquid were compared with those obtained in four conventional organic solvents. Interestingly, the reaction in the ionic liquid proceeded with very high selectivity to give the a-arylated compound, whereas variable mixtures of the a- and (3-isomers were obtained in the organic solvents DMF, DMSO, toluene, and acetonitrile. Furthermore, no formation of palladium black was observed in the ionic liquid, while this was always the case with the organic solvents. [Pg.242]

Ruthenium and osmium form some remarkably stable alkyls and aryls compounds, often in unusually high oxidation states. [Pg.75]

Aryl compounds containing another donor atom in the orf/io-position like Ag(C6H4CH2NMe2) have also been isolated (they are probably clusters). [Pg.308]

MOCVD PRECURSORS ALKYL, ALICYCLIC, AND ARYL COMPOUNDS... [Pg.86]

Common metallo-organic alkyls, alicyclic, and aryl compounds and their relevant properties are listed in Table 4.1 l l Many additional organometallic compounds are available commercially as listed in Ref 7. [Pg.88]

In the presence of a precious metal catalyst, aryl halides can undergo dehalo-dimerization to give biaryl products, with varying degrees of selectivity. The major byproduct of this reaction is usually the dehalogenated aryl compound. This type of chemistry is currently one of the very few viable means for the large scale preparation of biaryl compounds. [Pg.217]

The course of the reaction of phosphinous amides with carboxylic acid chlorides is dependent on the characteristics of the iV-residue. Thus with N-aryl compounds this reaction gives chlorophosphanes and carboxamides. With AT-alkyl analogs the primary reaction products have not been identified but they hydrolyzed to carboxaldehydes [120]. [Pg.90]

AstraZeneca has filed a patent application on novel bis-aryl compounds as CB1/CB2 agonists that lack CNS penetration and thus avoid the unwanted side effects associated with activation of central CBi receptors [210]. Over 100 compounds are specifically claimed e.g. (321). Compounds were tested in receptor binding assays using human CBi and CB2 receptor preparations. Respective K values were in the ranges 50-5,000 and 15-2,800 nM, although no specific data were presented. [Pg.259]

In order to synthesize the DIOP-based ligands, the aldehyde derivatives 3 were treated with commercially available diethyl tartrate in the presence of catalytic amount of PPTS (Scheme 21.2). While good conversions were attained with the naphtyl derivative, they were low with all other aryl compounds and unsuccessful with heteroaromatic moieties (yields < 10%). [Pg.187]

E. Hydrolysis of Si-C Bonds 1. Alkyl, Alkenyl, and Aryl Compounds... [Pg.175]

For arylpolysilanes the results are quite different.(34) The 29Si NMR for (PhSiMe)n is shown in Figure 6 it consists of three broad lines with relative intensity 3 3 4, each line evidently containing a cluster of resonances. The patterns for other aryl-alkylpolysilanes differ, but in general two or three broad resonances are found none of the aryl compounds studied so far has given a symmetrical pattern like those observed for the alkylpolysilanes of Figure 5. [Pg.14]

Table 9.1 13C chemical shifts of some common heterocyclic and fused aryl compounds. [Pg.138]

Compounds containing the iV-thiosulfinylamino group (R—N=S=S) have been reported recently.85 "88 The aryl compounds are rather unstable purple oils which show promise as sulfur transfer agents, although few definitive examples have yet been reported.87... [Pg.68]


See other pages where Arylation compounds is mentioned: [Pg.270]    [Pg.760]    [Pg.770]    [Pg.404]    [Pg.550]    [Pg.281]    [Pg.166]    [Pg.733]    [Pg.733]    [Pg.163]    [Pg.62]    [Pg.973]    [Pg.56]    [Pg.357]    [Pg.88]    [Pg.181]    [Pg.264]    [Pg.200]    [Pg.92]    [Pg.12]    [Pg.273]    [Pg.234]    [Pg.354]    [Pg.67]    [Pg.70]    [Pg.176]   
See also in sourсe #XX -- [ Pg.2 , Pg.17 ]




SEARCH



0-Aryl compounds, preparation

Active hydrogen compounds arylation

Active hydrogen compounds reaction with aryl halides

Active methylene compounds arylation

Aldehydes from aryl nitro compounds

Alkyl and Aryl Compounds

Alkyl and aryl metal compound

Alkylation or arylation of heterosubstituted tricoordinated phosphorus compounds

Aluminum compounds alkenyl-aryl reactions

Amino compounds alkylation/arylation

Aromatic aryl compounds

Aromatic compounds aryl ketones

Aromatic compounds arylated

Aromatic compounds direct arylation

Aromatic compounds from aryl alkenes

Aromatic compounds from aryl diazonium salts

Aromatic compounds from aryl esters

Aromatic compounds from aryl ethers

Aromatic compounds from aryl halides

Aromatic compounds from aryl iodides

Aromatic compounds from aryl nitriles

Aromatic compounds from aryl organometallics

Aromatic compounds from aryl sulfonic acids

Aromatic compounds from photochemical arylation

Arsenic compounds, aryl— from

Aryl Azo Compounds

Aryl Grignard compounds

Aryl Halogen Compounds

Aryl Interactions fact or artifact A New Bonding Motif For Supramolecular Self-Assembly in Organotin Compounds

Aryl Migrations in Organometallic Compounds of the Alkali Metals

Aryl Oxygen Compounds

Aryl azides from diazonium compounds

Aryl bismuth compounds

Aryl boron compounds

Aryl bromides Grignard compound reactions

Aryl compounds

Aryl compounds Hiyama cross-coupling reaction

Aryl compounds Knoevenagel reaction

Aryl compounds Kumada cross-coupling reactions

Aryl compounds Negishi cross-coupling reactions

Aryl compounds alkyne/nitrile reactions

Aryl compounds azide 1,3-dipolar cycloadditions

Aryl compounds crossed

Aryl compounds crossed coupling reactions

Aryl compounds cycloaddition reactions

Aryl compounds dimerization

Aryl compounds heterocycles

Aryl compounds heterocyclic synthesis

Aryl compounds intramolecular

Aryl compounds intramolecular coupling reactions

Aryl compounds reactions

Aryl compounds syntheses

Aryl compounds with alkenes

Aryl compounds, allylchiral

Aryl compounds, allylchiral synthesis

Aryl compounds, excited state properties

Aryl copper compounds

Aryl derivatives amide compounds

Aryl derivatives compounds

Aryl diazonium compounds

Aryl halides and related compounds

Aryl halides and related compounds, photochemistry

Aryl halides arylzinc compound electrochemical

Aryl halides compounds

Aryl halides organomagnesium compound

Aryl halides organometallic compound cross-coupling

Aryl halides with organocopper compounds

Aryl halides with organotin compounds

Aryl halides with organozinc compounds

Aryl iodides Grignard compound reactions

Aryl lead compounds

Aryl mercury compounds

Aryl metal compounds, conversion

Aryl nitro compounds

Aryl nitro compounds, preparation

Aryl nitro compounds, sulfonation

Aryl nitroso compounds

Aryl selenium compounds

Aryl triflates compound

Aryl, from aromatic compounds

Aryl, from aromatic nitro compounds

Aryl-Vinyllithium Compounds

Aryl-alkali Metal Compounds

Aryl-heteroaryl compounds, Suzuki

Aryl-heteroaryl compounds, Suzuki coupling

Arylation Grignard compounds

Arylation activated methylene compounds

Arylation and Alkynylation of Neutral Organocopper Compounds

Arylation of Nitro Compounds

Arylation of active methylene compounds

Arylation of aromatic compounds

Arylation of carbonyl compounds

Arylation organoboron compounds

Arylation organomercury compounds

Arylation organometallic compounds

Arylation tellurium compounds

Arylselenomethyl Aryl Tellurium Compounds

Asymmetric carbonyl compound arylation

Boron compounds alkenyl-aryl reactions

Boron compounds arylation

Boronic carbonyl compound arylation

COPPER CATALYZED ARYLATION 0-DICARBONYL COMPOUNDS

Carbocations, aryl aromatic compounds

Carbonyl compound arylation

Carbonyl compounds 3-unsaturated /3-arylated

Carbonyl compounds intramolecular arylation

Carboxylic esters, aryl compounds

Compounds of Alkyl and Aryl Alanes

Coupling reactions aryl compounds

Coupling reactions with aryl compounds

Diazonium salts aryl, reaction with aromatic compounds

Diazonium salts, aryl compounds

Electrophilic substitution aryl Grignard compounds

Esters from aryl nitro compounds

Ethylenic compounds, arylation

From Alkyl Aryl Tellurium Compounds

From Aryl Organo Tellurium Compounds

From Benzoyl Aryl Tellurium Compounds

From Other Aryl Arylselenomethyl Tellurium Compounds

From Other Aryl Organothio Tellurium Compounds

From aryl nitro compounds

From aryl nitrogen compounds

Further aryl compounds

Halides, aryl from organometallic compounds

Halides, aryl reaction with active methylene compounds

Halides, aryl reaction with aromatic compounds

Halides, aryl, arylation aromatic compounds

Halides, aryl, arylation methylene compounds

Halides, aryl, with active compounds

Halides, aryl, with active methylene compounds

Indium compounds, aryl halide reactions with

Keto compounds arylation

Ketones aryl, from aromatic compounds

Lithium compounds alkyl or aryl

Magnesium compounds alkenyl-aryl reactions

Magnesium compounds systems, arylation

Metal-aryl compounds, oxygenation

Modern Arylations of Carbonyl Compounds

Nickel aryl compound

Nitriles from aryl nitro compounds

Olefin arylation by Pd(II)-catalysed carbodetelluration of aryltellurium compounds

Organocopper compound arylation

Organocopper compounds, reactions with aryl halides

Organogold compounds aryls

Organolithium compounds with aryl halides

Organometallic compounds aryl, hydrolysis

Organometallic compounds with aryl halides

Organometallic compounds, also from aryl halides

Organometallic compounds, aryl

Organothallium compounds arylation

Palladium-Catalyzed Arylations of a-C-H Acidic Compounds

Palladium-catalyzed a-arylation of carbonyl compounds and nitriles

Photochemistry of aryl halides and related compounds

REDUCTION OF DIAZONIUM COMPOUNDS. ARYL HYDRAZINES

Reaction with aryl compounds

Reactions of Transition Metal Compounds with Alkylating or Arylating Reagents

Reactions with Aryl Zinc Compounds

Reduction of aryl nitro compound

Reissert compounds arylation

Silicon compounds arylation

Sulfones from aryl nitro compounds

Sulfoxides, alkyl aryl reactions with carbonyl compounds

The Arylation of Activated Methylene Compounds

Tin compounds arylation

Transition Metal-Catalyzed Couplings of Nonactivated Aryl Compounds

Vinyl compounds aryl substituted

Vinyl-aryl compound

Zinc compounds alkenyl-aryl reactions

Zinc compounds arylation

Zirconium compounds aryl derivatives

© 2024 chempedia.info