申请人:Uclaf; Roussel
公开号:US05744635A1
公开(公告)日:1998-04-28
A method for prerparing compounds of formula (I), wherein R is an optionally substituted alkenyl or alkynyl radical having up to 8 carbon atoms, or an optionally substituted mono- or polycyclic aryl or heteroaryl radical, and R.sub.1 and R.sub.2 are an alkyl radical having up to 4 carbon atoms. According to the method, a compound of the formula (II), wherein X is a halogen atom, is exposed to an organometallic compound of the formula (III): RZ, wherein R has the same meaning as before and Z is a metal or metal derivative. Alternatively, a compound of formula (II'), wherein Z' is a metal or metal derivative, is exposed to a compound of the formula (III'): RX', wherein X' is a nucleophilic reaction leaving group. ##STR1##
一种制备化合物的方法,其中R是具有多达8个碳原子的可选取代烯烃或炔烃基团,或者是可选取代的单环或多环芳基或杂芳基,R.sub.1和R.sub.2是具有多达4个碳原子的烷基基团。根据该方法,将具有公式(II)的化合物,其中X是卤素原子,暴露于具有公式(III)的有机金属化合物中:RZ,其中R的含义与之前相同,Z是金属或金属衍生物。或者,将具有公式(II')的化合物,其中Z'是金属或金属衍生物,暴露于具有公式(III')的化合物中:RX',其中X'是亲核反应离去基团。