Efficient Synthesis of α-Glycosyl Chlorides Using 2-Chloro-1,3-dimethylimidazolinium Chloride: A Convenient Protocol for Quick One-Pot Glycosylation
作者:Madhu Babu Tatina、Duc Thinh Khong、Zaher M. A. Judeh
DOI:10.1002/ejoc.201800360
日期:2018.5.24
A convenient method for the synthesis of α‐glycosyl chloride donors in high 80–96 % yields within 15–30 min using 2‐chloro‐1,3‐dimethylimidazolinium chloride has been developed. The method enables quick and direct one‐pot glycosylationreactions in high overall yields.
Synthesis of glycosyl chlorides using catalytic Appel conditions
作者:Imlirenla Pongener、Kirill Nikitin、Eoghan M. McGarrigle
DOI:10.1039/c9ob01544b
日期:——
stereoselective synthesis of glycosylchlorides using catalytic Appel conditions is described. Good yields of α-glycosyl chlorides were obtained using a range of glycosyl hemiacetals, oxalyl chloride and 5 mol% Ph3PO. For 2-deoxysugars treatment of the corresponding hemiacetals with oxalyl chloride without phosphine oxide catalyst also gave good yields of glycosylchloride. The method is operationaly