Journal of Organic Chemistry p. 1828 - 1832 (1981)
Update date:2022-08-05
Topics:
Marino, Joseph P.
Ferro, Michael P.
The preparation and pentannulation reactions of 1-(phenylthio)-, 1-(methylthio)- and 1-(isopropylthio)cyclopropylphosphonium fluoborates are described.As part of a synthetic approach to portulal, a plant-growth regulator, 2-(carbomethoxy)-4-methylcyclohept-4-en-1-one is converted to its bicyclo<5.3.0>decenone derivative.This annulation reaction illustrates the synthetic application and limitations of the 1-thio-substituted cyclopropylphosphonium reagents.
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