✦ LIBER ✦

Effective, thermal one-carbon + two-carbon cycloaddition of cyclopropenone ketals with electron-deficient olefins: Cyclopropane formation.

✍ Scribed by Dale L. Boger; Christine E. Brotherton

Book ID: 104242582
Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 182 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)91393-0

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✦ Synopsis

Treatment

of olefins bearing one electron-withdrawing substituent with cyclopropenone ketals under mild, thermal conditions provide cyclopropane products.

Recently, we disclosed the results of a study of the thermal reaction of cyclopropenone ketals with electron-deficient olefins bearing two electron-withdrawing substituents, a reaction which provides cyclopentenone ketal products,2 equation 1. The preliminary studies suggested that the

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