Process for making m-hydroxyphenyl substituted compounds
申请人:John Wyeth & Brother Limited
公开号:US04463177A1
公开(公告)日:1984-07-31
m-Hydroxyphenyl substituted compounds of formula ##STR1## where R is an organic radical and R.sup.1 is hydroen or an organic radical are prepared by dehydrohalogenating a compound of formula ##STR2## (where X is chlorine or bromine, and R and R.sup.1 have the above meanings). Preferred novel starting materials of formula (II) are of the formula ##STR3## (where R.sup.1 and X are as above, n is 2,3 or 4, R.sup.2 is hydrogen or lower alkyl and R.sup.3 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl(lower)alkyl or aryl(lower)alkyl).
m-Hydroxyphenyl substituted compounds of formula
where R is an organic radical and R' is hydrogen or an organic radical are prepared by dehydrohalogenating a compound of formula
(where X is chlorine or bromine, and R and R' have the above meanings). Preferred novel starting materials of formula (ll) are of the formula
(where R1 and X are as above, n is 2, 3 or 4, R2 is hydrogen or lower alkyl and R3 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl(lower)alkyl or aryl(lower)alkyl).
通过脱氢卤化式化合物(其中 X 为氯或溴,R 和 R' 具有上述含义)制备式(ll)的间羟基苯基取代化合物,其中 R 为有机基,R'为氢或有机基。 式(ll)的优选新型起始原料为式(其中 R1 和 X 如上,n 为 2、3 或 4,R2 为氢或低级烷基,R3 为氢、低级烷基、低级烯基、低级炔基、环烷基(低级)烷基或芳基(低级)烷基)。
SHEPHERD, R. G.
作者:SHEPHERD, R. G.
DOI:——
日期:——
SHEPHERD, ROBIN G.;WHITE, ALAN C., J. CHEM. SOC. PERKIN TRANS., 1,(1987) N 10, 2153-2155