Sterically hindered 3-thienylidene-4-piperidones

Sterically hindered 3-thienylidene-4-piperidones Full article

Journal

Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science
ISSN: 2376-8444 , E-ISSN: 0568-5230

Output data

Year: 1986, Volume: 35, Number: 12, Pages: 2511-2516 Pages count : 6 DOI: 10.1007/bf01474210

Authors

Myshkina L.A. ^1,2 , Stoyanovich F.M. ^1,2 , Gol'dfarb Ya.L. ^1,2 , Kazarina E.K. ^1,2

Affiliations

1	N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow
2	Scientific-Research Institute for the Biological Testing of Chemical Compounds

1. Condensation of triacetoneamine with thiophene aldehyde and its derivatives in the presence of base gave 3-mono and 3,5-bis-thienylidene-2,2,6,6-tetramethyl-4-piperidones. 2. 2,2,6,6-Tetramethyl-3 (2-thienylidene)-4-piperidone did not add butyl lithium at the carbonyl group but was metallated at the 5-position of the thiophene ring. In the case of reaction of 2,2,6,6-tetramethyl-5 (2-thienylidene)-piperidine-3,5-dione with butyl lithium both metallation and 1,4-addition at the conjugated C=O group were observed.

Myshkina L.A. , Stoyanovich F.M. , Gol'dfarb Y.L. , Kazarina E.K.
Sterically hindered 3-thienylidene-4-piperidones
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 1986. V.35. N12. P.2511-2516. DOI: 10.1007/bf01474210 OpenAlex

OpenAlex:

W2095077351

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