发明授权
US6043381A Process for preparing substituted benzo[1,2-g]-chrom-3-ene, benzo[1,2-g]-thiochrom-3-ene and benzo[1,2-g]-1,2-dihydroquinoline derivatives 失效
取代苯并[1,2-g] - 色烯-3-烯,苯并[1,2-g] - 硫代色烯-3-烯和苯并[1,2-g] -1,2-二氢喹啉衍生物的制备方法

Process for preparing substituted benzo[1,2-g]-chrom-3-ene,
benzo[1,2-g]-thiochrom-3-ene and benzo[1,2-g]-1,2-dihydroquinoline
derivatives
摘要:
Compounds of Formula 1 ##STR1## where the symbols have the meaning disclosed in the specification are prepared by reaction of a compound of Formula 2 ##STR2## with an organometal reagent R--M to provide a compound of Formula 3 ##STR3## that is reacted with the reagent X.sub.3 --Y(R.sub.2)--A--B in the presence of a catalyst to provide the compounds of Formula 1.
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