公开(公告)号：US10202327B2

公开(公告)日：2019-02-12

申请号：US15422728

申请日：2017-02-02

Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA

Inventor： Travis J. Williams ,  Zhiyao Lu ,  Ivan Demianets

IPC: C07C51/295 ,  C01B3/32 ,  C01D7/14 ,  C07F15/00 ,  B01J31/22 ,  C07C51/16

Abstract: A catalyst system includes a complex having formula I which advantageously has a sterically protecting N-heterocyclic carbene (NHC) carbene-pyridine ligand to handle harsh reactions conditions than many prior art catalysts: wherein M is a transition metal; o is 0, 1, 2, 3, or 4; R1 is a C1-6 alkyl, a C6-18 aryl, or an optionally substituted C5-18 heteroaryl. In a refinement, R1 is methyl, ethyl, butyl, n-propyl, isopropyl, n-butyl, sec-butyl, or t-butyl; R2, R3, R3′ are independently an optionally substituted C1-6 alkyl, halo (e.g., Cl, F, Br, etc), NO2, an optionally substituted C6-18 aryl, or an optionally substituted C5-18 heteroaryl; R4, R4′ are independently an optionally substituted C1-6 alkyl, halo, NO2, an optionally substituted C6-18 aryl, or an optionally substituted C5-18 heteroaryl; and X− is a negatively charge counter ion and L1, L2 are each independently a neutral ligand.