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Diazomethane reactions

A valuable extension of the diazomethane reaction for the preparation of A-homosteroids was discovered by Johnson, Neeman and Birkeland " who found that a,j5-unsaturated ketones are homologated by reaction with diazomethane in the presence of either fluoroboric acid or boron trifluoride. The main product is formed by the insertion of a methylene group between the carbonyl group and the unsaturated a-carbon to give a / ,y-unsaturated ketone. [Pg.361]

Johnson and co-workers also investigated the general acid-catalyzed diazomethane reaction with benzalacetone (20). When treated with 3 mole-equivalents of diazomethane, the latter is converted to the A -pyrazoline... [Pg.362]

Reviews dealing with a specific reaction or property from the heterocyclic point of view have been rarer—tautomerism (continued from Volume 1), free radical substitution, metal catalysts and pyri-dines, acid-catalyzed polymerization of pyrroles, and diazomethane reactions have been covered in this volume. [Pg.465]

Diazomethane, reaction with 2,4,6-tri-nitrobenzenesulfonic acid and dimethyl ether, 46,122 Diazonium xanthates, detonation of, 47, 107... [Pg.126]

Diazomethane, reaction with D-cam-phor-lO-sulfonyl chloride and triethylamine, 48,106 reaction with chloromethanesulfonyl chloride, 49,19... [Pg.69]

The stereoselectivity in the Grignard reaction,97 complementary to that in the methyllithium109 and diazomethane156 reactions, of methyl 3,4-0-isopropylidene-a-L-en/thro-pentopyranosid-2-ulose (62), and that between the Grignard and diazomethane reactions of the / ano-mer107 of 62, methyl 2,3-0-isopropylidene-/ -L-en/thro-pentopyranosid-... [Pg.82]


See other pages where Diazomethane reactions is mentioned: [Pg.247]    [Pg.249]    [Pg.251]    [Pg.253]    [Pg.255]    [Pg.257]    [Pg.259]    [Pg.261]    [Pg.263]    [Pg.265]    [Pg.267]    [Pg.271]    [Pg.275]    [Pg.277]    [Pg.279]    [Pg.283]    [Pg.285]    [Pg.1294]    [Pg.1407]    [Pg.151]    [Pg.88]    [Pg.89]    [Pg.90]   
See also in sourсe #XX -- [ Pg.77 ]




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1,3-dipolar cycloaddition reactions diazomethane

1-Phenylurazole, reaction with diazomethane

1.3- dipolar cycloaddition reactions diazomethane preparation

1.4- Dibenzoyl-l,3-butadiyne, reaction with diazomethane

2-Pyridone reaction with diazomethane

Acid chlorides reaction with diazomethane

Acyl chlorides reaction with diazomethane

Alcohols reaction with diazomethane

Aldehydes reaction with diazomethane

Aromatic compounds reaction with diazomethane

Benzene derivatives reaction with diazomethane

Bonds reaction with diazomethane

Carboxylic acid chlorides diazomethane reactions

Coumarandione, reaction with diazomethane

Cyanuric chloride, reaction with diazomethane

Cyclobutanones reactions with diazomethane

Cyclohexanone reaction with diazomethane

Cyclohexanones reactions with diazomethane

Cyclopropanones reactions with diazomethane

Diacetylene, reaction with diazomethane

Diazomethane Nierenstein reaction

Diazomethane compounds diazoalkane cycloaddition reactions

Diazomethane coupling reactions with

Diazomethane insertion reactions

Diazomethane reaction with 1,2-dicarbonyl compounds

Diazomethane reaction with 2-pyrazolin-5-ones

Diazomethane reaction with acid

Diazomethane reaction with acyl halides

Diazomethane reaction with alcohols and phenols

Diazomethane reaction with alkenes

Diazomethane reaction with amines

Diazomethane reaction with benzene

Diazomethane reaction with carboxylic acid chlorides

Diazomethane reaction with carboxylic acids

Diazomethane reaction with enamines

Diazomethane reaction with ether

Diazomethane reaction with hydroxyl

Diazomethane reaction with quinones

Diazomethane reaction with, phosgene

Diazomethane reaction, transition states

Diazomethane, cycloaddition reactions

Diazomethane, reaction with D-camphor-10-sulfonyl chloride and

Diazomethane, reaction with D-camphor-10-sulfonyl chloride and triethylamine

Diazomethane, reaction with allyl

Diazomethane, reaction with benzoquinones

Diazomethane, reaction with carboxylic

Diazomethane, reaction with dimethyl ether

Diazomethane, reaction with fluorinated

Diazomethane, reaction with hydrogen over

Diazomethane, reaction with platinum

Diazomethane, reactions with heterocycles

Diazomethane, reactions with heterocyclic

Diazomethane, reactions with heterocyclic compounds

Diazomethane, reactions with tautomeric heterocycles

Diazomethane, trimethylsilyl cycloaddition reaction

Diazomethane, trimethylsilyl cycloaddition reaction synthesis

Diazomethanes reactions

Esters from diazomethane reaction with aci

Ethers by reaction of diazomethane with alcohols

Ethyl ether, reaction with diazomethane

Flavones 4-thio-, reaction with diazomethane

Heterocyclic compounds reactions of diazomethane with

Isatin reaction with diazomethane

Ketones reaction with diazomethane

Organic reactions with diazomethane

Other Reactions of Diazomethane with Heterocycles

Phenol reaction with diazomethane

Reaction with diazomethane

Reactions of Diazomethane

Reactions of diazomethane with

Selective reactions methylation with diazomethane

Thianaphthenequinone, reaction with diazomethane

Urazole, reaction with diazomethane

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