Preparation of silazane compound

摘要

A silazane compound useful as synthesis intermediates for paint additives, polymer modifiers, pharmaceuticals and agricultural chemicals is efficiently prepared by reaction of a halosilane compound with an amino-containing compound in a solvent which is the same silazane compound as the target product.

主权项

1. A method for preparing a silazane compound, target product of formula (4) or of formula (5)
R1nSi(NR2R3)(4-n)  (4)wherein each R1 is independently hydrogen or a substituted or unsubstituted monovalent hydrocarbon group of 1 to 20 carbon atoms, R2 and R3 are independently a substituted or unsubstituted monovalent hydrocarbon group of 1 to 20 carbon atoms, n is an integer of 0 to 3, and R1 groups bond together to form a C2-C20 ring with the silicon atom to which they are attached when n is 2 or 3,wherein each R1 is independently hydrogen or a substituted or unsubstituted monovalent hydrogen group of 1 to 20 carbon atoms, R4 is a divalent organic group of 1 to 20 carbon atoms which may contain a heteroatom, and n is an integer of 0 to 3 , said method comprising the step of reacting a halosilane compound having the general formula (1):
R1nSiX(4-n)  (1)wherein X is a halogen atom and R1 and n are as defined above, with an amino-containing compound having the general formula (2):
R2R3NH  (2)wherein R2 and R3 are as defined above or with an amino-containing compound having the general formula (3):wherein R4 is as defined above in a solvent which is the same silazane compound as the target product.