Process for preparation of asymmetric triorganotin halide
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United States of America Patent
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Oct 23, 1990
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app pub date -
Sep 25, 1989
filing date -
Sep 28, 1988
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Abstract
A process for the preparation of an asymmetric triorganotin halide which is represented by the general formula [III] ##STR1## wherein R represents alkyl or phenyl, R* represents cyclohexyl or neophyl, and X represents a chlorine or bromine atom, which comprises reacting in the presence or absence of an inert organic solvent an asymmetric tetraorganotin compound of the general formula [I] ##STR2## with a tin (IV) halide of the general formula [II] SnX.sub.4 [II] in approximately equimolar amounts to yield a reaction mixture including compounds of the general formula of [III] and [IV] ##STR3## and subsequently, without the isolation of the asymmetric triorganotin halide [III], reacting the reaction mixture with substantially twice the molar amount, based on monoorganotin trihalide [IV], of an ether solution of organomagnesium halide of the general formula of [V] R*MgX [V].
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