Competing formations of oxonium and carbonyl ylides with carbonylcarbenes


Talinli N. , Anac C., Kumbaraci V.

HELVETICA CHIMICA ACTA, cilt.86, ss.2779-2783, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 86 Konu: 8
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1002/hlca.200390227
  • Dergi Adı: HELVETICA CHIMICA ACTA
  • Sayfa Sayıları: ss.2779-2783

Özet

A series of 2-mono- and 2,2-disubstituted 1,3-dioxepin derivatives, two of which also had a carbonyl function in one of their 2-R groups, were prepared and reacted with dimethyl diazomalonate with copper(II) acetylacetonate as a catalyst. Ylide formation probabilities with allyl ether and/or carbonyl functions were investigated. A chemoselectivity in favor of carbonyl ylide was observed.