Preparation of organotin compounds

Details Preparation of organotin compounds Preparation of organotin compounds

C - Chemistry, Metallurgy

07

F

260/435.7

C07F 7/22 (2006.01)

Patent

CA 1076130

ABSTRACT OF THE DISCLOSURE Organotin derivatives of mercaptoalcohol esters that correspond to the general formula Image Image , or Image where m R and R' are hydrocarbon, m is 2 or 3, and p is 1 or 2 are prepared by sequentially reacting a quantity of a monoorganotin trihalide, a diorganotin dihalide or an equimolar mixture of a mono- and a diorganotin halide containing n moles of halogen with n-2 equivalent weights of a base, n-2 moles of a mercaptoalcohol, 0.5 mole of an alkali metal sulfide when p is 1 or an alkali metal disulfide when p is 2, for every mole of tin present and n-2 moles of an carboxylic acid or ester thereof. The present method offers advantages over the prior art, which teaches reacting an esterified mercaptoalcohol with an organotin halide, oxide or organostannoic acid. Compounds wherein R' is n-heptyl are unique in that they do not exhibit the disagreeable odor that characterizes this class of compounds.

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