𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Asymmetric cyclization of unsaturated aldehydes catalyzed by a chiral lewis acid

✍ Scribed by Soichi Sakane; Keiji Maruoka; Hisashi Yamamoto

Book ID
108372493
Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
675 KB
Volume
42
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Asymmetric cyclization of unsaturated al
Asymmetric cyclization of unsaturated aldehydes catalyzed by a chiral lewis acid
✍ Soichi Sakane; Keiji Maruoka; Hisashi Yamamoto πŸ“‚ Article πŸ“… 1985 πŸ› Elsevier Science 🌐 French βš– 254 KB

A highly enantioselective cyclization of prochiral unsaturated aldehydes has been accomplished with a chiral zinc reagent derived from dimethylzinc and (R)-(+)-l,l'-bi-2-naphthol. Of the available methods for constructing multicarbocyclic structures, cationic polyolefin cyclization, a synthetic str

Asymmetric aldol addition of aldehydes t
Asymmetric aldol addition of aldehydes to a difluoroketene silyl acetal catalyzed by chiral Lewis acids
✍ Katsuhiko Iseki; Yoshichika Kuroki; Daisuke Asada; Mie Takahashi; Satoshi Kishim πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 French βš– 667 KB

Aldol reaction of aldehydes with difluomketene ethyl trimethylsilyl acetal (1) in the presence of a substoichiometric amount of chiral Lewis acid 2 or 3 provides the corresponding ~,a-difluom hydroxy esters 4-12 with high enantioselectivitles (up to 98% ee). Reaction temperature has a great influenc