Synthesis of enaminones with stationary stereochemistry
نویسندگان
چکیده
منابع مشابه
Synthesis of Enaminones with Stationary Stereochemistry
Cinco enaminonas 4a-e, derivadas da reação do ânion da 2,4,4-trimetil-2-oxazolina com acetato de etila, benzoato de etila, ciclohexanoato de etila, hexanoato de etila e p-metil benzoato de etila, respectivamente, foram preparadas e caracterizadas por RMNH, RMNC, FTIR e EM. As enaminonas 4a e 4b também foram analisadas pela técnica de difração de raios-X. A enaminona 4a cristalizou-se no sistema...
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In present paper a simple procedure for the synthesis of enaminones without catalyst from 1,3-diketones that reacted with primary or secondary amines in ethanol as solvent, as well as the reaction of enaminones with unsaturated esters such as dimethyl acetylene dicarboxylate are reported.
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in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
15 صفحه اولsynthesis of enaminones and their reaction with dimethyl acetylene dicarboxylate
in present paper a simple procedure for the synthesis of enaminones without catalyst from 1,3-diketones that reacted with primary or secondary amines in ethanol as solvent, as well as the reaction of enaminones with unsaturated esters such as dimethyl acetylene dicarboxylate are reported.
متن کاملEnaminones as building blocks for the synthesis of substituted pyrazoles with antitumor and antimicrobial activities.
Novel N-arylpyrazole-containing enaminones 2a,b were synthesized as key intermediates. Reactions of 2a,b with active methylene compounds in acetic acid in the presence of ammonium acetate afforded substituted pyridine derivatives 5a-d. Enaminones 2a,b also reacted with aliphatic amines such as hydrazine hydrate and hydroxylamine hydrochloride to give bipyrazoles 8a,b and pyrazolylisoxazoles 9a,...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 1999
ISSN: 0103-5053
DOI: 10.1590/s0103-50531999000500006