Kinetic resolution of vinyl carbonates through a lipase-mediated synthesis of their carbonate and carbamate derivatives.
摘要:
Lipase from Candida antarctica was used in the synthesis of different chiral carbonates and carbamates through the enzymic resolution of the starting racemic vinyl carbonates. A striking feature was the changeover of the enantioselectivity with regard to the one showed when vinyl carbonates were used in the resolution of alcohols and amines, thus the S enantiomer of the vinyl carbonate was resolved whereas the same enzyme was selective towards R ones when resolving alcohols and amines. In this way, compounds obtained beforehand as R carbonates were now achieved as S ones with better e.e.'s and shorter reaction times.
Kinetic resolution of vinyl carbonates through a lipase-mediated synthesis of their carbonate and carbamate derivatives.
摘要:
Lipase from Candida antarctica was used in the synthesis of different chiral carbonates and carbamates through the enzymic resolution of the starting racemic vinyl carbonates. A striking feature was the changeover of the enantioselectivity with regard to the one showed when vinyl carbonates were used in the resolution of alcohols and amines, thus the S enantiomer of the vinyl carbonate was resolved whereas the same enzyme was selective towards R ones when resolving alcohols and amines. In this way, compounds obtained beforehand as R carbonates were now achieved as S ones with better e.e.'s and shorter reaction times.
Double enantioselective enzymic synthesis of carbonates and urethanes
作者:Marcos Pozo、Vicente Gotor
DOI:10.1016/0957-4166(95)00369-z
日期:1995.11
Double enantioselective lipase-catalyzed alkoxycarbonylation of racemic alcohols and amines with racemic vinyl carbonates to yield carbonates and carbamates with two stereogenic centers was carried out using Candida antarctica lipase.
Kinetic resolution of vinyl carbonates through a lipase-mediated synthesis of their carbonate and carbamate derivatives.
作者:Marcos Pozo、Vicente Gotor
DOI:10.1016/s0040-4020(01)81561-1
日期:1993.1
Lipase from Candida antarctica was used in the synthesis of different chiral carbonates and carbamates through the enzymic resolution of the starting racemic vinyl carbonates. A striking feature was the changeover of the enantioselectivity with regard to the one showed when vinyl carbonates were used in the resolution of alcohols and amines, thus the S enantiomer of the vinyl carbonate was resolved whereas the same enzyme was selective towards R ones when resolving alcohols and amines. In this way, compounds obtained beforehand as R carbonates were now achieved as S ones with better e.e.'s and shorter reaction times.