Naphthothiete und ihre Anwendung in der Heterocyclen??Synthese

A Mayer, N Rumpf, H Meier

Index: Mayer, Axel; Rumpf, Norbert; Meier, Herbert Liebigs Annalen, 1995 , # 12 p. 2221 - 2226

Full Text: HTML

Citation Number: 0

Abstract

The three isomeric naphthothietes 5, 11, and 16 were prepared according to the reaction sequences shown in Schemes 1-3. The final step was in each case a flash vacuum pyrolysis (FVP) of the corresconding mercaptonaphthalenemethanol4, 9, and 15, respectively. The thiete rings in 5 and 11 can be opened by gentle heating; the ring opening of the isomer 16 possesses a much higher activation barrier. A MNDO calculation of the AHf values of 5, 11 ...