𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Glycosylation reaction under high pressure

✍ Scribed by Makoto Sasaki; Yasuo Gama; Masahiko Yasumoto; Yutaka Ishigami


Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
235 KB
Volume
31
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


Glycosylation of various alcohols with 2,3,4,6-tetra-O-benzyl-a-D-glucopyranosyl bromide (1) in the presence of hindered amines under conditions of high pressure gave a-glycosides in good yield with high selectivity. Stereocontrolled glycosylation reactions are one of the most important topics in oligosaccharide synthesis and a large number of methods have been reported.' However, there still remains a strong demand to develop simple, mild, and efficient methods for the stereoselective construction of O-glycoside bond.2


πŸ“œ SIMILAR VOLUMES


Multicomponent Strecker Reaction under H
✍ Kiyoshi Matsumoto; Jongβ€…Chul Kim; Hirokazu Iida; Hiroshi Hamana; Koji Kumamoto; πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 German βš– 343 KB πŸ‘ 1 views

## Abstract For the first time, uncatalyzed, high‐pressure (0.6β€…GPa) reactions with ketones have proven to be a powerful way to perform the three‐component __Strecker__ synthesis of __Ξ±__‐amino nitriles in high yields. Two types of double __Strecker__ reactions were achieved, but attempts to perfor

Cycloadditions and other reactions of ph
✍ Neil S. Isaacs; Ghazi Najem El-Din πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 French βš– 509 KB

Phospholes ,synthesised by an improved procedure, undergo Dials-Alder reactions at high pressure but not dipolar cycloadditions to nitrile oxides (which deoxygenate) or diaxomethanes ( which can, however, trap the phosphole oxides) . Diphenylketene gives an unexpected spirophosphorane with phosphole