Dow Global Technolgoies LLC

Heqi Pan

Chunming Zhang

Jerzy Klosin

Philip P Fontaine

David R Wilson

Shawn D Feist

Jayachandran Devaraj

David Wilson

Clark S Davis

Andre Yvon-Bessette

Arvind Jaganathan

Donnie W Blaylock

Ian B Gillespie

Patrick L Heider

Methods for preparing a catalyst precursor material from dihalo-substituted metalloids are provided. The methods In include mixing a first solution of a halogenated alkane, at least one solvent, and a first component selected from a dihalo-substituted-group-14 metalloid or an organolithium reagent in a first reaction zone. Continuously adding the first solution to a second reaction zone, and continuously adding a second solution to the second reaction zone. The second solution including at least one solvent and a second component of either the dihalo-substituted-group-14 metalloid or the organolithium reagent, the second component is different from the first component. Mixing the first solution and the second solution in the second reaction zone.

Methods for preparing catalyst precursor materials

A process for preparing one or more carbazoles comprising (a) contacting one or more compounds represented by formula (1) below with diboron reagents in the presence of PdCl2(dppf) to form one or more 2,2'-dichlorobiaryl represented by formula (2) below; and (b) contacting the one or more 2,2&#x2032;-dichlorobiaryls with one or more H2N&#x2014;Y compounds, in the presence of one or more palladium containing catalytic components; thereby forming one or more carbazoles represented by formula (3) below is provided. 

Process for preparing carbazoles

The instant invention provides a process for the preparation of bis(chloromethyl)dichlorosilane (BCMCS) or bis(chloromethyl) (aryl)chlorosilane (BCMACS) comprising reacting bis(chloromethyl) diphenylsilane and one or more chloride compounds in the presence of a Lewis acid in an inert solvent and under an inert atmosphere. 

Process for the preparation of bis(chloromethyl)dichlorosilane and bis(chloromethyl)(aryl)chlorosilane

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Midland, MI, United States of America

Heqi Pan