Further ‘tethered’ Ru(II) catalysts for asymmetric transfer hydrogenation (ATH) of ketones; the use of a benzylic linker and a cyclohexyldiamine ligand
作者:Jose E.D. Martins、David J. Morris、Bhavana Tripathi、Martin Wills
DOI:10.1016/j.jorganchem.2008.08.026
日期:2008.11
asymmetric transferhydrogenation (ATH) of ketones is described. In the case of 4, the novelty lies in the use of a benzyl tethering group between the asymmetric ligand part (TsDPEN) and the η6-arene ring, which increases the complex rigidity. For 5, the use of a cyclohexyldiamine as a chiral ligand is described for the first time. In the ATH of ketones in formic acid/triethylamine, alcohols with ees
The importance of the N–H bond in Ru/TsDPEN complexes for asymmetric transfer hydrogenation of ketones and imines
作者:Rina Soni、Fung Kei Cheung、Guy C. Clarkson、Jose E. D. Martins、Mark A. Graham、Martin Wills
DOI:10.1039/c1ob05208j
日期:——
Ru(II) complexes of TsDPEN containing two alkyl groups on the non-tosylated nitrogen atom are poor catalysts for asymmetric transfer hydrogenation of ketones and imines; this observation provides direct evidence for the importance of the NâH interaction in the transition state for ketone reduction.
PROCESS FOR HYDROGENATING KETONES IN THE PRESENCE OF RU(II) CATALYSTS
申请人:Dyke Alan
公开号:US20120123142A1
公开(公告)日:2012-05-17
The present invention relates to a process for hydrogenating a substrate comprising a carbon-heteroatom double bond, the process comprising the step of reacting the substrate with hydrogen gas in the presence of a hydrogenation catalyst, wherein the hydrogenation catalyst is a complex of formula (I): R
1-10
, A and Hal are as defined in the specification. The present invention also provides processes for the preparation of the complex of formula (I) and intermediates thereof.
Process for hydrogenating ketones in the presence of RU (II) catalysts
申请人:Johnson Matthey Public Limited Company
公开号:EP2805765A1
公开(公告)日:2014-11-26
The present invention relates to a process for hydrogenating a substrate comprising a carbon-heteroatom double bond, the process comprising the step of reacting the substrate with hydrogen gas in the presence of a hydrogenation catalyst, wherein the hydrogenation catalyst is a complex of formula (I):
R1-10, A and Hal are as defined in the specification. The present invention also provides processes for the preparation of the complex of formula (I) and intermediates thereof.
本发明涉及一种对含有碳-叔原子双键的基质进行氢化的工艺,该工艺包括在氢化催化剂存在下使基质与氢气反应的步骤,其中氢化催化剂为式(I)的络合物:
R1-10、A 和 Hal 如说明书中所定义。本发明还提供了制备式(I)络合物及其中间体的工艺。
Process for hydrogenating ketones in the presence of Ru(II) catalysts
申请人:JOHNSON MATTHEY PUBLIC LIMITED COMPANY
公开号:US10406514B2
公开(公告)日:2019-09-10
The present invention relates to a process for hydrogenating a substrate including a carbon-heteroatom double bond, the process including the step of reacting the substrate with hydrogen gas in the presence of a hydrogenation catalyst, wherein the hydrogenation catalyst is a complex of formula (I):
R1-10, A and Hal are as defined in the specification. The present invention also provides processes for the preparation of the complex of formula (I) and intermediates thereof.
本发明涉及一种对包括碳-叔原子双键的基质进行氢化的工艺,该工艺包括在氢化催化剂存在下使基质与氢气反应的步骤,其中氢化催化剂为式(I)的络合物:
R1-10、A 和 Hal 如说明书中所定义。本发明还提供了制备式 (I) 复合物及其中间体的工艺。