期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 144, 期 16, 页码 7189-7197出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c13252
关键词
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资金
- National Science Foundation [DBI-1759544]
- Alfred P. Sloan Fellowship program
- Camille Dreyfus Teacher-Scholar program
- Kwanjeong Educational Foundation
This study describes a multi-component approach to prepare structurally complex organosulfur compounds through a nickel-catalyzed 1,2-carbosulfenylation reaction between unactivated alkenes, organoboron nucleophiles, and tailored organosulfur electrophiles. The selectivity of the reaction pathway is controlled by tuning the electronic and steric properties of the leaving group in the reagents, favoring three-component coupling and suppressing side reactions.
A multi-component approach to structurally complex organosulfur products is described via the nickel-catalyzed 1,2-carbosulfenylation of unactivated alkenes with organoboron nucleophiles and tailored organosulfur electrophiles. The key to the development of this transformation is the identification of a modular N-alkyl-N-(arylsulfenyl)arenesulfonamide family of sulfur electrophiles. Tuning the electronic and steric properties of the leaving group in these reagents controls pathway selectivity, favoring three-component coupling and suppressing side reactions, as examined via computational studies. The unique syn-stereoselectivity differs from traditional electrophilic sulfenyl transfer processes involving a thiiranium ion intermediate and arises from the directed arylnickel(I) migratory insertion mechanism, as elucidated through reaction kinetics and control experiments. Reactivity and regioselectivity are facilitated by a collection of monodentate, weakly coordinating native directing groups, including sulfonamides, alcohols, amines, amides, and azaheterocycles.
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