机译:4-Phosphoranylidenebutenolide intermediates in the synthesis of 4-ylidenebutenolides and 4-ylidenetetronic acids. Synthesis of alkylidenephthalide constituents of celery odour and models for freelingyne
机译:Heterocycles by cycloaddition. Part I. Cycloadditionndash;extrusionndash;ring expansion reactions of five-membered mesoionic compounds with diphenylcyclopropenone and related compounds: preparation of six-membered heterocycles
机译:Rapid intramolecular collapse of betaines derived from 5-phenyldibenzophospholes as compared with those derived from acyclic triarylphosphines; mechanism of the Wittig reaction in protic solvents