Cobalt‐Catalyzed Regioselective Hydroboration of Terminal Alkenes. Issue 38 (16th October 2017)

• Record Type: Journal Article
• Authors: Zhang, Guoqi; Wu, Jing; Wang, Man; Zeng, Haisu; Cheng, Jessica; Neary, Michelle C.; Zheng, Shengping
• Is Part Of: European journal of organic chemistry. Issue 38(2017)
• Page Start: 5814
• Page End: 5818
• Publication Date: 2017-10-16
• Subjects: Hydroboration -- Alkenes -- Regioselectivity -- Cobalt -- Homogeneous catalysts -- N ligands; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.201701047
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract : Cobalt(II) catalysts based on flexible PNP or NNN ligands were explored for the regioselective hydroboration of alkenes. A known Co II –PNP pincer complex was found to efficiently catalyze alkene hydroboration with excellent anti‐Markovnikov selectivity, whereas a newly synthesized dinuclear Co II –NNN complex was found to catalyze the hydroboration of a range of aromatic terminal alkenes with good Markovnikov selectivities (up to 98:2, b/l). This represents a rare example of Markovnikov selectivity in the hydroboration of alkenes using an inexpensive, flexible‐ligand‐supported dinuclear cobalt catalyst. Abstract : Cobalt(II) catalysts based on flexible PNP or NNN ligands were found to catalyze the regiodivergent hydroboration of alkenes. A new dinuclear Co II –NNN complex catalyzes the hydroboration of a range of aromatic terminal alkenes with good Markovnikov selectivity. This represents a rare example of Markovnikov selectivity in the hydroboration of alkenes using an inexpensive dinuclear cobalt catalyst.