39806-16-1Relevant articles and documents
PREPARATION AND RESOLUTION OF (η4-1,3-DIENECARBOXYLIC ACID)Fe(CO)3 COMPLEXES
Nakanishi, Saburo,Kumeta, Katsuhisa,Nakanishi, Jun-Ichi,Takata, Toshikazu
, p. 2097 - 2100 (1995)
(η4-1,3-dienecarboxylic acid)Fe(CO)3 complexes 1 were prepared starting from a Horner-Emmons reaction of α,β-unsaturated aldehydes, followed by complexation with Fe(CO)5 and hydrolysis of the ester groups.Reaction of 1 with (S)-2-octanol gave a
Cobalt-Catalyzed Diastereo- And Enantioselective Reductive Allyl Additions to Aldehydes with Allylic Alcohol Derivatives via Allyl Radical Intermediates
Wang, Lei,Wang, Lifan,Li, Mingxia,Chong, Qinglei,Meng, Fanke
supporting information, p. 12755 - 12765 (2021/08/30)
Catalytic generation of ambiphilic π-allyl-metal complexes and their utility in enantioselective transformations constitutes a powerful approach for introduction of allyl groups to a molecule. Herein an unprecedented cobalt-catalyzed highly site-, diastereo-, and enantioselective protocol for stereoselective formation of nucleophilic allyl-Co(II) complexes followed by addition to aldehydes is presented. The reaction features diastereo- and enantioconvergent conversion of easily accessible allylic alcohol derivatives to diversified enantioenriched homoallylic alcohols with a remarkably broad scope of allyl groups that can be introduced. Mechanistic studies indicated that allyl radical intermediates were involved in this process. These new discoveries establish a new strategy for development of enantioselective transformations through capture of radicals by chiral Co complexes, pushing forward the frontier of Co complexes for enantioselective catalysis.
Systematic Study on the Catalytic Arsa-Wittig Reaction
Inaba, Ryoto,Kawashima, Ikuo,Fujii, Toshiki,Yumura, Takashi,Imoto, Hiroaki,Naka, Kensuke
supporting information, p. 13400 - 13407 (2020/09/21)
Efficient catalytic arsa-Wittig reactions have been developed by using 1-phenylarsolane as a catalyst. A wide array of aldehydes was converted to the corresponding olefins in high yields with moderate to excellent E stereoselectivity in the presence of a catalytic amount of 1-phenylarsolane. Moreover, density functional theory calculations were carried out to afford insight into the E/Z selectivity.
