Heterocycles

Concise synthesis of tetrahydrophenanthridone by palladium reagent

T Harayama, H Toko, H Nishioka, H Abe, Y Takeuchi

Index: Harayama, Takashi; Toko, Hiroko; Nishioka, Hiromi; Abe, Hitoshi; Takeuchi, Yasuo Heterocycles, 2003 , vol. 59, # 2 p. 541 - 546

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Citation Number: 7

Abstract

Résumé/Abstract Heck reaction of N-(2-halophenyl)-N-methyl-1-cyclohexene-1- carboxamide (1) and 2-bromo-N-methyl-N-phenyl-1-cyclohexene-1-carboxamide (4) using a palladium reagent under several reaction conditions was examined. Reaction of 4 using Pd (OAc) 2, DPPP, and Bu 3 P afforded tetrahydrophenanthridone (5) in excellent yield.