4.3 Article

Iridium-catalyzed asymmetric hydrogenation of dibenzo[b,f][1,4]thiazepines

Journal

PURE AND APPLIED CHEMISTRY
Volume 85, Issue 4, Pages 843-849

Publisher

WALTER DE GRUYTER GMBH
DOI: 10.1351/PAC-CON-12-07-02

Keywords

asymmetric hydrogenation; dibenzothiazepines; heterocyclic chemistry; iodine; iridium

Funding

  1. National Natural Science Foundation of China [21032003, 20872140]
  2. National Basic Research Program of China [2010CB833300]

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Highly enantioselective hydrogenation of substituted dibenzo[b,f][1,4]thiazepines was achieved with up to 96 % ee (enantiomeric excess) using [Ir(COD)Cl](2)/(R)-SynPhos complex as catalyst in the presence of iodine. This method provides an efficient access to optically active 11-substituted-10,11-dihydrodibenzo[b,f][1,4]thiazepines.

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