申请人:Rhone-Poulenc Sante
公开号:US04634778A1
公开(公告)日:1987-01-06
Process for preparing chlorinated ethylenic derivatives of the formula ##STR1## in which R.sub.1 represents acetyl, formyl optionally in the form of an acetal, hydroxy optionally as an ether or ester, alkyloxycarbonyl, alkyl of 1 to 12 carbon atoms substituted by one or more acetyl, formyl optionally in the form of an acetal, hydroxy optionally in the form of an ether or ester, or alkyloxycarbonyl, alkenyl of 2 to 12 carbon atoms containing one or more double bonds optionally substituted by one or more of acetyl, formyl optionally in the form of an acetal, hydroxy optionally in the form of an ether or ester, or alkyloxycarbonyl, or R.sub.1 represents 3-sulpholenyl or a radical of formula ##STR2## in which R.sub.2 denotes a hydrogen or acetyl, by reacting chlorine in a nonpolar aprotic solvent with a compound of general formula ##STR3## in which R.sub.1 is defined as above. The products of formula I, some of which are new, are useful as intermediates in the synthesis of terpene products such as vitamin E.
制备氯乙烯衍生物的过程的中文翻译如下:在此过程中,R.sub.1代表乙酰基、甲酰基(可选地以缩醛的形式)、羟基(可选地作为醚或酯)、烷氧羰基、1至12个碳原子的烷基(由一个或多个乙酰基、甲酰基(可选地以缩醛的形式)、羟基(可选地作为醚或酯)或烷氧羰基取代)、2至12个碳原子的烯基(含有一个或多个双键,可选地由一个或多个乙酰基、甲酰基(可选地以缩醛的形式)、羟基(可选地作为醚或酯)或烷氧羰基取代),或R.sub.1代表3-硫蒽基或公式##STR2##中的基团,其中R.sub.2表示氢或乙酰基,通过在非极性无水溶剂中用氯与一般公式##STR3##的化合物反应,其中R.sub.1如上定义。公式I的产物,其中一些是新的,可用作合成类萜产品(如维生素E)的中间体。