𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Facile synthesis of unsaturated lactones via intramolecular Wittig reaction

✍ Scribed by Pradeep Kumar; K. Saravanan


Book ID
104208324
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
573 KB
Volume
54
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis


The phosphoranes 3 formed from the reaction of a variety of keto alcohols 1 and (triphenylphosphoranylidene)ethenone 2 undergo intramolecular Wittig cyclization to afford the unsaturated lactones in moderate yields. 0


πŸ“œ SIMILAR VOLUMES


A facile and convenient synthesis of tet
✍ Rahim Hekmatshoar; Roghieh Nouri; S. Yahya Sh. Beheshtiha πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 116 KB πŸ‘ 1 views

## Abstract Treatment of triphenylphosphine with dialkyl acetylenedicarboxylate leads to 1:1 adduct and concomitant protonation of late adduct by pentan‐2,3,4‐trione 3‐oxime gave the reactive intermediate, vinyltriphenylphosphonium salts, which undergoes an intramolecular Wittig reaction to produce

Intramolecular Wittig reactions applied
✍ Florent Yvergnaux; Yves Le Floc'h; RenΓ© GrΓ©e; LoΓ―c Toupet πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 French βš– 241 KB

A systematic study of the intramolecular Wittig reactions of w-aldehydophosphoraaes 5 has been performed and indicates that the amounts of monounsaturated lactones 6 and dilactones 7 is dependent on chain length.