Reactions of ethoxycarbonylmethylene(triphenyl)phosphorane with some ortho-quinones in the presence of triphenylphosphine, alcohols and acetic anhydride
作者:Demetrios N. Nicolaides、Spyros G. Adamopoulos、Demetrios A. Lefkaditis、Konstantinos E. Litinas、Petroula V. Tarantili
DOI:10.1039/p19920000283
日期:——
The reactions of ortho-quinones 1a, 1c and 1d with ylide 2 in the presence of triphenylphosphine afforded the ylides 11a, 11c and 11d and compound 12. The reactions of 1a and 1c with 2 in refluxing methanol or ethanol gave compounds 16 and 17 respectively, while the reactions of 1a–d with 2 in acetic anhydride yielded the acetates 18a, 18b, 18d and 19b, 19d, the furan derivative 24 and the ylide 25