The Journal of Organic Chemistry

Thiophenol-promoted radical chain reduction of. alpha.-substituted isobutyrophenones by 1, 3-dimethyl-2-phenylbenzimidazoline

DD Tanner, JJ Chen

Index: Tanner, Dennis D.; Chen, Jian Jeffrey Journal of Organic Chemistry, 1992 , vol. 57, # 2 p. 662 - 666

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Citation Number: 22

Abstract

The reductions of a-haloacetophenones and a-halopropiophenones by 1, 3-dimethy1-2- phenylbenzimidazoline (DMBI) have been reported to proceed via an electron-transfer free- radical chain mechanism. The reduction of a-haloisobutyrophenones did not proceed by the chain sequence. We now report that initiated reductions of a-bromo-and a- chloroisobutyrophenonea (IIIa, b) have been found to be promoted by the addition of ...