The preparation and reactions of stable phosphorus ylides derived from maleic anhydrides, maleimides or isomaleimides

A facile synthesis of stable phosphorus

A facile synthesis of stable phosphorus ylides derived from 3,6-dibromocarbazole and kinetic investigation of the reactions by UV spectrophotometry technique

✍ Sayyed Mostafa Habibi-Khorassani; Malek Taher Maghsoodlou; Mohammad zakarianezha 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 274 KB 👁 1 views

## Abstract Stable crystalline phosphorus ylides were obtained in excellent yields from the 1:1:1 addition reaction between triphenylphosphine and dialkyl acetylenedicarboxylates, in the presence of NH‐acid, such as 3,6‐dibromocarbazole. These stable ylides exist in solution as a mixture of two geo