Use of cyclohexa-2,5-dien-1-yl-silanes as precursors for gaseous hydrosilanes

摘要

A method of making hydrosilanes having a formula R1R2R3SiH by reacting a compound having formula I:;
in solution using a strong Lewis acid. This way, e.g., alkenes or carbonyl compounds can be hydrosilylated in good yields using the cyclohexa-2,5-dien-1-yl-silanes of general formula I as transfer hydrosilylating agents in the presence of a strong Lewis acid as catalyst with concomitant formation of an arene solvent.

主权项

1. A method for making hydrosilanes having formula R1R2R3SiH (Ia), by reacting a compound having formula I with a Lewis acid of general formulae II or IIa: wherein R1 and R2 represent independently from each other C1-C3-alkyl or C1-C3-alkoxy, R3 represent independently from R1 and R2 H, C1-C3-alkyl, C1-C3-alkoxy or aryl and R4 and R5 represent independently from each other H, C1-C3-alkyl or R1R2R3Si with R1 to R3 as defined above, R is methyl or ethyl, m+n=5, m=0 to 5 and n=0 to 5, with concomitant formation of an arene solvent.