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Heterocycles from

A wide class of aiyl-based quaternary surfactants derives from heterocycles such as pyridine and quinoline. The Aralkyl pyridinium halides are easily synthesized from alkyl halides, and the paraquat family, based upon the 4, 4 -bipyridine species, provides many interesting surface active species widely studied in electron donor-acceptor processes. Cationic surfactants are not particularly useful as cleansing agents, but they play a widespread role as charge control (antistatic) agents in detergency and in many coating and thin film related products. [Pg.2577]

Radicals derived from heterocyclic compounds by removal of hydrogen from a ring are named by adding -yl to the names of the parent compounds (with elision of the final e, if present). These exceptions are retained ... [Pg.12]

Ring Synthesis from Heterocycles 4.04.3.2.1 Ring opening... [Pg.285]

The loss of one or two (or sometimes more) ring members from heterocyclics, concerted with or followed by formation of a new ring, is a highly versatile method for heterocyclic synthesis. Loss of N2, CO, CO2, S, SO, SO2, H2C=CH2, etc. is common. Diradical or dipolar intermediates are often encountered, and valence isomerization before the actual fragmentation is characteristic for some systems. [Pg.43]

The most important oxirane syntheses are by addition of an oxygen atom to a carbon-carbon double bond, i.e. by the epoxidation of alkenes, and these are considered in Section 5.05.4.2.2. The closing, by nucleophilic attack of oxygen on carbon, of an OCCX moiety is dealt with in Section 5.05.4.2.1 (this approach often uses alkenes as starting materials). Finally, oxirane synthesis from heterocycles is considered in Section 5.05.4.3 one of these methods, thermal rearrangement of 1,4-peroxides (Section 5.05.4.3.2), has assumed some importance in recent years. The synthesis of oxiranes is reviewed in (B-73MI50500) and (64HC(19-1U). [Pg.114]

Several approaches to unfused azetes have appeared, the most widely used being extrusion of small molecules from heterocyclic precursors. [Pg.282]

Bis(tnfluoromethyl -substituted phosphoranes are obtained on reaction of bis(tnfluoromethyl)-substituted heterodienes and P(ni) species [74J, 742 143] In the case of sulfur- and selemum-contaimng phosphoranes, the corresponding heterodienes are generated in situ from heterocyclic precursors [137] (equation 32)... [Pg.858]

II, The Structure of Bases Obtained from Heterocyclic Quaternary... [Pg.167]

The structure, and the mechanism of the chemical transformations, of the pseudo ammonium bases which can be obtained from heterocyclic quaternary ammonium salts has been one of the most discussed phenomena in theoretical organic chemistry since the first publication in this field by Claus and Himmelmann. These questions have still not been finally decided. [Pg.167]

Thus among the known pseudo bases derived from heterocyclic quaternary ammonium salts, the following principal types can be differentiated according to their basicity ... [Pg.180]

Synthesis from Heterocycles Containing Three Heteroatoms 336... [Pg.327]

Boron, D. J. Atlas, R. M. Johnson, A. R., et ah, Method for removing organic sulfur from heterocyclic sulfur containing organic compounds. Patent No. USH1986H. [Pg.218]

Dyes (11) from azophenols exist totally in the azo form8 whereas dyes (12) from heterocyclic couplers such as pyrazolones8,11 and acyclic couplers such as acetoacetanilides8 12 (13) exist totally in the hydrazone form. Dyes (14) derived from amino couplers exist in the azo form.8 However, as described above, all these dyes will exist predominantly in the azo form in the derived metal complexes. [Pg.553]

A stereoselective one-pot synthesis of substituted 1,2-thiazetidine 1,1-dioxides (P-sultams) 55 started from heterocyclic pentafluorophenyl (PFP) sulfonates <06OL5513>. [Pg.103]


See other pages where Heterocycles from is mentioned: [Pg.144]    [Pg.144]    [Pg.144]    [Pg.168]    [Pg.18]    [Pg.31]    [Pg.41]    [Pg.41]    [Pg.117]    [Pg.244]    [Pg.274]    [Pg.288]    [Pg.748]    [Pg.723]    [Pg.142]    [Pg.89]    [Pg.956]    [Pg.397]    [Pg.228]    [Pg.312]    [Pg.50]    [Pg.118]    [Pg.327]    [Pg.333]    [Pg.360]   
See also in sourсe #XX -- [ Pg.1678 ]




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1-Alkenes From three-membered heterocycles

1.4- Dioxo compounds heterocycles from

Alkaloids and Other Heterocyclic Compounds from Porifera

Alkaloids, from allylated heterocycles

Amides from heterocycles

Anion radicals from heterocycles

Appendix Glance Index to Typical Pyrazine Derivatives Available from Other Heterocyclic Systems

Arbuzov, B. A., Nikonov, G. N., Phosphorus Heterocycles from

Azadienes, synthesis of heterocycles from

Azides: heterocycles from

Biosynthesis of Heterocycles: From Isolation to Gene Cluster, First Edition

Carbenes Derived from Five-membered Heterocycles

Carbenes Derived from Four-membered Heterocycles

Carbocation from heterocycles

Conjugated dienes from heterocycles

Cyclic heterocycles from

Cyclization heterocycles from

Diorganotin Alkoxides Derived from Heterocyclic Alcohols

El Khadem, Hassan, Synthesis of Nitrogen Heterocycles from Saccharide

El Khadem, Hassan, Synthesis of Nitrogen Heterocycles from Saccharide Derivatives

Endocyclic anions from unsaturated heterocycles

Esters from nitrogen heterocycles

Five-membered heterocycles from thioureas

Five-membered heterocycles radicals derived from

Formation of heterocyclic compound from

Four-membered heterocyclic compounds from

From Heterocyclic Tellurium Compounds

From Other Heterocycles

From Other Heterocyclic Substrates

From Other Heterocyclic Systems

From Other Sulphur Heterocycles

From Spiro Heterocyclic Substrates

From benzo five-membered heterocycles

From five-membered heterocycles by extrusion

From heterocyclic compounds

From heterocyclic precursors

From non-heterocyclic precursors

From non-heterocyclic precursors by closure of one bond

Heterocycles From Cycloadditions

Heterocycles benzoxazines, from

Heterocycles from Cyanobacteria Okino

Heterocycles from acetals

Heterocycles from active hydrogen compounds

Heterocycles from alcohols

Heterocycles from aldehydes

Heterocycles from alkenes

Heterocycles from alkynes

Heterocycles from allenes

Heterocycles from amines

Heterocycles from aromatic compounds

Heterocycles from arylhydrazones

Heterocycles from boranes

Heterocycles from carbenes

Heterocycles from carbodiimides

Heterocycles from carbohydrates

Heterocycles from cycloaddition reactions

Heterocycles from dienes

Heterocycles from dihalides

Heterocycles from diketones

Heterocycles from dinitriles

Heterocycles from diols

Heterocycles from glycols

Heterocycles from heteroatom Diels-Alder reactions

Heterocycles from hydrazines

Heterocycles from intramolecular Michael addition

Heterocycles from intramolecular acylation

Heterocycles from intramolecular nucleophilic

Heterocycles from ketones

Heterocycles from lactams

Heterocycles from lactones

Heterocycles from malonic esters

Heterocycles from marine organisms

Heterocycles from nitrenes

Heterocycles from oxazole rearrangements

Heterocycles from oxazole rearrangements oxazoles reactions

Heterocycles from sulfones

Heterocycles from unsaturated alcohols

Heterocycles phosphorus, from

Heterocycles phosphorus, from ahydroxyalkylphosphines and

Heterocycles synthesis from azadienes

Heterocycles synthesis from azides

Heterocyclic compounds flavoring from

Heterocyclic compounds formation from alkynes

Heterocyclic compounds formation from isocyanides

Heterocyclic compounds formation from saturated substituted

Heterocyclic compounds formation from tetracyanoethylene

Heterocyclic compounds formation from ylidenemalononitrile

Heterocyclic compounds synthesis from oximes

Heterocyclic compounds synthesized from

Heterocyclic compounds synthesized from reviews

Heterocyclic compounds, synthesis from

Heterocyclic compounds, synthesis from halides

Heterocyclic nitramines derived from Mannich reactions

Heterocyclic syntheses from thioureas

Heterocyclic syntheses, from nitrilium

Heterocyclic syntheses, from nitrilium salts under

Heterocyclic syntheses, from nitrilium salts under acidic conditions

Heterocyclic synthesis from hydrogen cyanide derivatives

Heterocyclic synthesis from nitrilium salts under acidic

Heterocyclic synthesis, from nitrilium salts

Hydrazides from heterocycles

Hydrogen cyanide derivatives, heterocycles from

Hydrogen cyanide derivatives, synthesis heterocycles from

Imines from unsaturated heterocycles

Intramolecular cyclizations heterocycles from

Ionic liquids from heterocycles, reviews

N-Heterocyclic Carbenes Derived from Six- or Seven-membered Heterocycles

Naphthyridines from Other Heterocyclic Substrates

Nitrate esters from the ring-opening of strained oxygen heterocycles

Nitriles Nitrogen heterocycles, synthesis from

Nitriles heterocycles from

Nitrogen heterocycles from

Nitrogen heterocycles radicals from

Nitrogen heterocycles, synthesis from

Nitrogen heterocycles, synthesis from saccharide derivatives

Of heterocycles from azadienes

Other Heterocycles Directly Derived from Selenazole

Oxidative cleavage, degradation heterocycles from

P-Stereogenic Compounds Derived from Enantiopure Heterocycles

PRIMARY SYNTHESES FROM OTHER HETEROCYCLIC SYSTEMS

Proton carbon from heterocyclic systems

Pyrazines from Spiro Heterocycles

Radicals from Oxygen Heterocycles

Radicals from Phosphorus Heterocycles

Radicals from Selenium Heterocycles

Radicals from Sulfur Heterocycles

Reactions from heterocyclic compounds

Ring compounds heterocyclic five-membered rings from

SOLID-PHASE SYNTHESIS OF HETEROCYCLES FROM PEPTIDES AND AMINO ACIDS

Saccharides, nitrogen heterocycles from

Spiro-heterocycles from sugars

Subject from saturated heterocycles

Sugars nitrogen heterocycles from

Sulfenes, heterocycles from

Sulfines, heterocycles from

Sulfuryl chloride, heterocycles from

Sulphur heterocycles, formation from

Syntheses From Other Heterocycles

Syntheses from Acyclic Compounds and Other Heterocycles

Synthesis from Heterocycles

Synthesis from Non-heterocycles

Synthesis heterocycles from oximes

Synthesis of Quinoxalines from Heterocyclic Systems

Synthesis of Quinoxalines from Various Fused Nitrogen-Containing Heterocycles Without a Pyrazine Fragment

Synthesis of nitrogen heterocycles from saccharide derivatives

Synthesis of perfluoroalkyl heterocycles from carbonyl

The Chemistry of Heterocyclic Betaines Derived from Even Alternant Hydrocarbon Dianions

The Structure of Bases Obtained from Heterocyclic Quaternary Ammonium Salts

Thiazoles from Other Heterocyclic Compounds

Triorganotin Alkoxides Derived from Heterocyclic Alcohols

Triosmium complexes from sulfur-containing heterocycles

Unsubstituted Triorganotin Carboxylates Derived from Heterocyclic Acids

Urea: heterocycles from

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