𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of α-methylene monosubstituted δ-lactones from α-phosphonolactones new wittig-horner compounds

✍ Scribed by Gioacchino Falsone; Ute Wingen


Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
121 KB
Volume
30
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


The synthesis of the a-methylene monosubstitutedGlactones 3-s and 14-18 from -theaphosphonolactones &,2& and the aldehydes 2-5 and 11-13 is described.


📜 SIMILAR VOLUMES


Oxidation of 2-substituted allylsilane t
✍ Masahito Ochiai; Eiichi Fujita; Masao Arimoto; Hideo Yamaguchi 📂 Article 📅 1983 🏛 Elsevier Science 🌐 French ⚖ 200 KB

2-Substituted allylsilanes 1 on treatment with iodosobenzene and boron trifluoride etherate in dioxane afforded conjugated enals 2 directly in good yield, from which a-methylene y-and &lactones 7 were synthesized.

Synthesis of Optically Active β - Alkyl
✍ Sheng-Min Zhao; Mei-Xiang Wang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 704 KB

## Abstract A new approach to optically active β‐alkyl‐α‐methylene‐δ‐butyrolactone derivatives was reported from the __Rhodococcus__ sp. AJ270‐catalyzed hydrolysis of appropriate nitriles. The inversion of enantioselectivity of the amidase has been observed when a methyl protection was introduced i