PROCESS FOR PREPARATION OF ALLYL SULFONE DERIVATIVES AND INTERMEDIATES FOR THE PREPARATION
申请人:Sumitomo Chemical Company, Limited
公开号:EP1426357A1
公开(公告)日:2004-06-09
The present invention relates to a process for producing an allyl sulfone derivative represented by the formula (3):
wherein Ar is an optionally substituted aryl group, and the corrugated line means either one of E/Z geometrical isomers, or a mixture thereof, which is an intermediate for producing vitamin A, which process is characterized by reacting an aryl sulfinic acid or a salt thereof represented by the formula (2):
ArSO2M (2)
wherein Ar is as defined above, and M is hydrogen atom, sodium atom or potassium atom, with an allyl halide derivative represented by the formula (1):
wherein X is a halogen atom, and Ar and the corrugated line are as defined above.
本发明涉及一种生产由式(3)表示的烯丙基砜衍生物的工艺:
其中 Ar 是任选取代的芳基,波纹线是指 E/Z 几何异构体中的一种或其混合物,它是生产维生素 A 的中间体,该工艺的特点是使由式(2)表示的芳基亚磺酸或其盐反应:
ArSO2M (2)
其中 Ar 如上定义,M 为氢原子、钠原子或钾原子:
其中 X 为卤素原子,Ar 和波纹线如上所定义。