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Carbanion induced synthesis of dibenzo[a,c]cycloheptenes through ring transformation reactions of 2H-pyran-2-one

โœ Scribed by Vishnu Ji Ram; Nidhi Agarwal

Book ID
104251352
Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
141 KB
Volume
43
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

An efficient and convenient one-pot synthesis of 4-aryl-2-methylsulfanyl-6,7-dihydro-5H-dibenzo[a,c]cycloheptene-1carboxylate 3a-n has been delineated and illustrated through carbanion induced ring transformation of 6-aryl-3-carbomethoxy-4methylsulfanyl-2H-pyran-2-ones 1 with benzosuberone 2.

๐Ÿ“œ SIMILAR VOLUMES

Carbanion-induced base-catalyzed synthes
Carbanion-induced base-catalyzed synthesis of unsymmetrical biaryls from suitably functionalized 2H-pyran-2-ones through ring-transformation reactions
โœ Vishnu Ji Ram; Nidhi Agarwal ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 112 KB

A synthesis of unsymmetrical highly functionalized biaryls with an amino substituent juxtaposed with two nitrile groups in one of the phenyl rings is delineated and illustrated by the carbanion-induced ring-transformation of 6-aryl-4-methylsulfanyl-2H-pyran-2-one-3-carbonitrile (1) and 4-sec-amino-6

An Expeditious Synthesis of Heteroarenes
An Expeditious Synthesis of Heteroarenes through Carbanion-Induced Ring Transformation Reactions of Suitable Functionalized Pyran-2-ones
โœ Mahendra Nath; Pratibha Srivastava; Atul Goel; Vishnu J. Ram ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 199 KB ๐Ÿ‘ 2 views

Pyrazolo[1,5-a]pyridines (3) and pyrano [4,3-d]pyrazolo [1,5-achieved from the reaction of 2 with polarised ketene dithioacetals (5) and arylidenemalononitrile, respectively. An a]pyridines (4) have been synthesized from the reaction of pyran-2-one (1) and 5-aryl-3-cyanomethyl-1H-pyrazole (2) analog