| 摘要 |
<p>A process for producing tricyclohexyl tin derivatives, consists of a first phase in which Grignard reagent and tin tetrahalogenide are caused to react by feeding them into a reaction vessel in a molar ratio of 3 : 1, and a second phase in which after hydrolysis and anhydridization of the condensation mass, further Grignard reagent is added in an amount such as to maintain the total molar ratio between the Grignard reagent and the tin tetrahalogenide, between 3.5 : 1 and 3.9 : 1. According to the subject invention it is possible to obtain a higher titre and improved yields of the above product. Furthermore, far simpler and more efficient operating conditions, compared to those of the prior art, in the practical industrial application are achieved. The process according to the invention differs above all, in respect of known technique, for the addition of the Grignard reagent in two successive stages, for the consequent elimination of cyclohexyl di-chloro-derivative, and for the lack of formation of the tetracyclohexyl tin derivative.</p> |
