Premium
Copper‐Catalyzed Enantioselective Hydroboration of 1,1‐Disubstituted Alkenes: Method Development, Applications and Mechanistic Studies
Author(s) -
Wen Lu,
Cheng Fengchang,
Li Han,
Zhang Shuoqing,
Hong Xin,
Meng Fanke
Publication year - 2018
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201700503
Subject(s) - enantioselective synthesis , hydroboration , chemistry , stereocenter , moiety , stereochemistry , enantiomer , protonation , borane , organic chemistry , catalysis , combinatorial chemistry , ion
Cu‐catalyzed enantioselective Cu–B(pin) addition to 1,1‐disubstituted alkenes generating tertiary alkylcopper complexes that contain a quaternary stereogenic center, followed by the protonation of the complexes are presented. The resulting formal hydroboration products are formed in up to 98 % yield and 99:1 enantiomeric ratio. The C–B(pin) moiety can be converted to a variety of useful functional groups. The method is applied to the enantioselective formal synthesis of ( R )‐ketoprofen. Detailed stereochemical models for enantioselective induction were elucidated through DFT calculations.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom