138914-96-2Relevant articles and documents
CYCLIZATION OF NITRILES. XLIX. DEGENERATED STEREOSELECTIVE CROSS-RECYCLIZATION OF ENAMINONITRILES OF THE 1,3-DITHIACYCLOHEXENE AND 4H-THIOPYRAN SERIES WITH PYRIDINIUM YLIDES INTO SUBSTITUTED 3-(PYRIDINIO)-5-CYANO-3,4-TRANS-1,2,3,4-TETRAHYDRO-6-PYRIDINE-THIOLATES
Shestopalov, A. M.,Sharanin, Yu. A.,Litvinov, V. P.
, p. 1179 - 1185 (2007/10/02)
The reactions of enaminonitriles of 1,3-dithiacyclohexenes and 4H-thiopyrans with pyridinium ylides proceed highly regio- and stereoselectively according to the cross-recyclization mode with the formation of substituted 3-(1-pyridino)-5-cyano-3,4-trans-1,2,3,4-tetrahydro-6-pyridinethiolates.These reactions have a common intermediate, arylmethylenecyanothioacetamide, which was used in the synthesis of substituted 6-pyridinethiolates.Because of the common nature of the structure of the initial enaminonitriles of 1,3-dithiacyclohexenes and 4H-thiopyrans, the intermediate compounds and the reaction end products, the above recyclization reactions were designated as degenerated reactions.