HANSELMANN PAUL,KLEGRAF ELLEN,ELZNER STEFAN,QUITTMANN WILHELM,FISCHER DANIEL FRIEDRICH
申请号：
IN11387/DELNP/2012
公开号：
IN2012DN11387A
申请日:
2012.12.31
申请国别(地区):
IN
年份:
2014
代理人:
摘要：
The invention relates to a method for the production of L carnitine wherein a chiral lactone carnitine precursor is obtained by a 2+2 cycloaddition of ketene with an aldehyde X CH CHO wherein X is selected from CI Br I and trimethylamine in the presence of a chiral catalyst.
