Process for preparing organosilanes

Details Process for preparing organosilanes Process for preparing organosilanes

2007-05-01

2007-05-01

Page, Thurman (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

Reexamination Certificate

active

10971811

ABSTRACT:
The invention relates to a process for preparing organosilanes of the general formula 1in-line-formulae description="In-line Formulae" end="lead"?R3Si—R′,  (1)in-line-formulae description="In-line Formulae" end="tail"?in which hydrosilanes of the general formula 2in-line-formulae description="In-line Formulae" end="lead"?R3Si—H  (2)in-line-formulae description="In-line Formulae" end="tail"?are reacted with halohydrocarbons of the general formula 3in-line-formulae description="In-line Formulae" end="lead"?R′—X  (3)in-line-formulae description="In-line Formulae" end="tail"?whereR are monovalent C1–C18hydrocarbon radicals, hydrogen or halogen,R′ are monovalent C1–C18hydrocarbon radicals andX is halogen,in the presence of a free-radical initiator which is selected from alkanes, diazenes and organodisilanes.

REFERENCES:
patent: 5502230 (1996-03-01), Mautner et al.
patent: 6175030 (2001-01-01), Kalchauer et al.
patent: 2 132 569 (1972-02-01), None
patent: 491641 (1975-11-01), None
Clarke et al. The role of silylenes in the direct synthesis of methylchlorosilanes, Journal of Organometallic Chemistry, 1991, 408 (2), 149-156.
W. Noll., “Chemistry and Technology of Silicones,” Academic Press Inc., Orlando 1968, pp. 26-28.
R.J.H. Voorhoeve, “Organohalosilanes,” Elseviet Publicshing Company 1967, p. 40-48.

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