One-step spiroannulation using 1, 2-bis (methylene) cycloalkane-magnesium reagents

RD Rieke, H Xiong

Index: Rieke, Reuben D.; Xiong, Heping Journal of Organic Chemistry, 1992 , vol. 57, # 24 p. 6560 - 6565

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Citation Number: 20

Abstract

Conclusions. The reaction of the carbene-like terminal phoephinidene complex Ph-PW (CO) 5 with the activated cyclic diene 3 yields as primary product the bicyclic phoephirane 4 in high stereomlectivity. It is suggeeted that this selectivity is determined early on the reaction path and results from repulsive interactions between the P-phenyl and diene groups. Tricyclic phospholene 5 is not a primary (1, 4addition) product from diene 3, but rather a ...