COBALT CATALYSTS AND THEIR USE FOR HYDROSILYLATION AND DEHYDROGENATIVE SILYLATION

摘要

Disclosed herein are cobalt complexes containing pyridine di-imine ligands and chelating alkenyl-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.

主权项

1. A complex of the formula: wherein each occurrence of R1, R2, R3, R4, R5, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, a C1-C18 alkyl, a C1-C18 substituted alkyl, a C6-C18 aryl, a substituted C6-C18 aryl, or an inert substituent, wherein one or more of R1-R5 and R8-R14, other than hydrogen, optionally contain at least one heteroatom; each occurrence of R6 and R7 is independently a C1-C18 alkyl, a C1-C18 substituted alkyl, a C6-C18 aryl or a substituted C6-C18 aryl, wherein one or both R6 and R7 optionally contain at least one heteroatom; optionally any two of R1, R2, R3, R4, R5, R6, and R7 vicinal to one another, R1-R2, and/or R4-R5 taken together may form a ring being a substituted or unsubstituted, saturated, or unsaturated cyclic structure, with the proviso that R5-R6 and R1-R7 are not taken to form a terpyridine ring; and Z is O, NR15, or CR16R17, wherein R15, R16, and R17 is independently hydrogen, a C1-C18 alkyl, C1-C18 substituted alkyl, a C6-C18 aryl, or a substituted C6-C18 aryl group, an alkaryl group, an aralkyl group, and one or more of R15, R16, and R17 optionally contain at least one heteroatom.