title: An Agostic Iridium Pincer Complex as a Highly Efficient and Selective Catalyst for Monoisomerization of 1-Alkenes to trans-2-Alkenes.
abstract: A unique Ir complex (tBuNCCP)Ir with the pyridine-phosphine pincer as the sole ligand, featuring a dual agostic interaction between the Ir and two σ C-H bonds from a tBu substituent, has been prepared. This complex exhibits exceptionally high activity and excellent regio- and stereoselectivity for monoisomerization of 1-alkenes to trans-2-alkenes with wide functional-group tolerance. Reactions can be performed in neat reactant on a more than 100 gram scale using 0.005 mol % catalyst loadings with turnover numbers up to 19000.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Rd, Shanghai, 200032, China.
authors.forename: Yulei
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Rd, Shanghai, 200032, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Rd, Shanghai, 200032, China.
authors.forename: Xiangqing
authors.initials: X
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Rd, Shanghai, 200032, China.
authors.forename: Xuebing
authors.initials: X
authors.lastname: Leng
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Rd, Shanghai, 200032, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Huang
keywords: agostic interactions; alkenes; iridium; isomerization; pincer ligands