	US 11,912,732 B2
	Method for cleaving alkyl tin halides
Sebastian Wiesner, Leipzig (DE); Horst Luthard, OT-Sandersdorf (DE); Marcus Watts, Sandersdorf (DE); and Vincent Perl, Magdeburg (DE)
Assigned to BNT CHEMICALS GMBH, Bitterfeld-Wolfen (DE)
Filed by BNT Chemicals GmbH, Bitterfeld-Wolfen (DE)
Filed on Apr. 12, 2022, as Appl. No. 17/719,036.
Claims priority of provisional application 63/197,753, filed on Jun. 7, 2021.
Claims priority of application No. 21168054 (EP), filed on Apr. 13, 2021.
Prior Publication US 2022/0332735 A1, Oct. 20, 2022
Int. Cl. C07F 7/22 (2006.01)

CPC C07F 7/2208 (2013.01)

17 Claims

1. A method of producing a mono alkyl tin halide from an alkyl tin compound, the method comprising:

providing the alkyl tin compound;

adding a Lewis acid catalyst to the alkyl tin compound to create a reaction mixture;

heating the reaction mixture; and

dosing a hydrogen halide into the reaction mixture to convert the alkyl tin compound into a raw product containing mono alkyl tin halide,

wherein the hydrogen halide used is gasiform.