The tandem Michael addition-cyclization of 2-oxo-cycloalkane carbothioic acid anilides 1-3 to benzylidenemalononitrile 4 yielded spiroannulated pyridines 5-7. Reaction of acrylonitrile with 2 and 3 gave 2,2-disubstituted Michael adducts 14, 15, whereas with 1 led to 2,2,5-tri(2-cyanoethyl)-cyclopentanone 11.
Bogdanowicz-Szwed, Krystyna; Kozicka, Michalina, Zeitschrift fur Naturforschung, B: Chemical Sciences, 1987, vol. 42, # 9, p. 1174 - 1180
作者:Bogdanowicz-Szwed, Krystyna、Kozicka, Michalina
DOI:——
日期:——
BOGDANOWICZ-SZWED, KRYSTYNA;KOZICKA, MICHALINA, Z. NATURFORSCH. B, 42,(1987) N 9, C. 1174-1180
作者:BOGDANOWICZ-SZWED, KRYSTYNA、KOZICKA, MICHALINA
DOI:——
日期:——
Studies on isocyanides and related compounds: synthesis of benzo[c]thiophenes by way of acid-induced three-component reactions
The ‘diimino thioanhydrides’ of cyclohex-l-ene-1,2-dicarboxylic acid have been synthesized in a very simple manner by allowing 2-(arylaminothiocarbonyl)cyclohexanones 1 and isocyanides 3 to react in an acidic medium. A mechanism for this three-component reaction, based on isocyanide chemistry, is proposed.