A synthesis of levetiracetam based on (S)-N-phenylpantolactam as a chiral auxiliary
摘要:
The synthesis of levetiracetarn and its enantiomer by deracernization of (+/-)-2-bromobutyric acid using either (S)- or (R)N-phenylpantolactarn as chiral auxiliaries, followed by S-N(2) substitution of the bromine atom by a 2-oxopyrrolidin-1-yl group and amidation of the carboxylic acid, is described. (c) 2005 Elsevier Ltd. All rights reserved.
A synthesis of levetiracetam based on (S)-N-phenylpantolactam as a chiral auxiliary
摘要:
The synthesis of levetiracetarn and its enantiomer by deracernization of (+/-)-2-bromobutyric acid using either (S)- or (R)N-phenylpantolactarn as chiral auxiliaries, followed by S-N(2) substitution of the bromine atom by a 2-oxopyrrolidin-1-yl group and amidation of the carboxylic acid, is described. (c) 2005 Elsevier Ltd. All rights reserved.