This invention relates to a new method for the stereospecific thiocarboxylation and nitration of organic compounds for the preparation of compounds according to formula (I):
comprising the following steps:
(a) reacting a compound of formula (II):
with a sulfonic derivative of formula (III)
wherein the R is chosen from the groups C
1-3
-alkyl, C
1-3
-alkyl substituted with 1 to 3 halogen atoms, phenyl, C
1-3
-alkyl-phenyl and C
1-3
-alkyl-phenyl wherein the alkyl is substituted with 1 to 3 halogen atoms and G is a halogen atomo or a group —O—SO
2
—R wherein R is as hereinabove defined
to yield a compound of formula (IV)
(b) treating compound (IV) with a thiocarboxylic acid of formula (V) or a salt thereof:
wherein Z is as defined above, to yield compound (VI)
and
(c) treating compound (VI) with tetrabutylammonium nitrate to yield a compound of formula (I).
本发明涉及一种用于立体特异性有机化合物的
硫代羧化和硝化制备的新方法,包括以下步骤:(a)将式子(II)的化合物与式子(III)的
磺酸衍
生物反应,其中R选择自C1-3-烷基,C1-3-烷基取代1至3个卤素原子,苯基,C1-3-烷基苯基和C1-3-烷基取代1至3个卤素原子的苯基,G是卤原子或基团-O-SO2-R,其中R如上所定义,生成式子(IV)的化合物;(b)用式子(V)的
硫代
羧酸或其盐处理化合物(IV),其中Z如上所定义,生成化合物(VI);(c)用四丁基
铵硝酸盐处理化合物(VI),生成式子(I)的化合物。