Siloxacycles are synthesized in high yield and purity by reaction of acyloxymethyl (alkoxy) silanes in the presence of a catalyst which is a metal from groups 3 to 15 of the periodic table, or a compound thereof.
Synthesis of 2,2,5,5-Tetrasubstituted 1,4-Dioxa-2,5-disilacyclohexanes via Organotin(IV)-Catalyzed Transesterification of (Acetoxymethyl)alkoxysilanes
作者:Sascha A. Erhardt、Florian Hoffmann、Jürgen O. Daiß、Jürgen Stohrer、Eberhardt Herdtweck、Bernhard Rieger
DOI:10.1002/chem.201202124
日期:2013.4.8
5‐disilacyclohexanes 3, 8 a–c, and 11 a–c if treated with organotin(IV) catalysts such as dioctyltin oxide. The reaction proceeds through transesterification of the acetoxy and alkoxy units followed by ring‐closure to form a dimeric six‐membered ring. The corresponding alkyl acetates are formed as the reaction by‐products. With these mild conditions, the method overcomes the drawbacks of previously reported