Helvetica chimica acta

Approaches to 1H??Cyclopropa [l] phenanthrenes. Eliminations with 1a, 9b??Dihydro??1H??cyclopropa [l] phenanthrene Derivatives

P Müller, HCN Thi, J Pfyffer

Index: Mueller, Paul; Thi, Huong Can Nguyen; Pfyffer, Jean Helvetica Chimica Acta, 1986 , vol. 69, p. 855 - 864

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Citation Number: 8

Abstract

Abstract Base-induced elimination of the sulfonium salt 2i in the presence of furan affords the addition products 7 and 8, derived from 1H-cyclopropa [l] phenanthrene (1) and the isomeric cyclopropene 5a (Scheme 3). Upon oxidation, the selenide 2c yields phenanthrene- 9-methanol (9), presumably via1. No evidence for the intermediate 1 is obtained from sulfoxide pyrolysis with 2e, which leads to products formed by radical pathways (Scheme ...