Methods for converting N-alkyl lactams to vinylogous urethanes and vinylogous amides via (methylthio) alkylideniminium salts

MM Gugelchuk, DJ Hart, YM Tsai

Index: Gugelchuk, Mary M.; Hart, David J.; Tsai, Yeun-Min Journal of Organic Chemistry, 1981 , vol. 46, # 18 p. 3671 - 3675

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Citation Number: 46

Abstract

Treatment of enolizable (methy1thio) alkylideniminium salts with active methylene compounds under basic conditions gives Knoevenagel-type adducts in excellent yields. Attempts to convert several of these adducts to vinylogous urethanes and vinylogous amides met with varied success. One-pot preparations of vinylogous urethanea and vinylogous amides from (methy1thio) alkylideni" salts and selected active methylene compounds are ...