Novel phosphine compound, transition metal complex containing the same phosphine compound as ligand and asymmetric synthesis catalyst containing the complex
申请人:——
公开号:US20030144139A1
公开(公告)日:2003-07-31
A phosphine compound of formula (1)
1
and a phosphine compound of formula (2)
2
a transition metal complex having the phosphine compound as a ligand and a catalyst for asymmetric hydrogenation including the transition metal complex.
Novel phosphine compound, transition metal complex containing said compound as ligand and asymetric synthesis catalyst containing said complex
申请人:Takasago International Corporation
公开号:EP1334976A1
公开(公告)日:2003-08-13
The invention relates to a phosphine compound of the formula (1):
wherein R1 is a linear or branched alkyl group having 1 to 5 carbon atoms or a cyclohexyl group; R2 and R3 represent independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R4 , R5 , R6 and R7 represent independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms and a di-alkyl amino group, each of the alkyl group having 1 to 5 carbon atoms; X represents a functional group that may form a stable bond with phosphorous atom; and with the proviso that a ring or condensed ring may be formed between the members of at least one pair selected from the group consisting of R4 and R5, R5 and R6, and R6 and R7.
Template synthesis of 9-membered triphospha-macrocycles with rigid o-phenylene backbone functions
作者:Peter G. Edwards、Mark L. Whatton
DOI:10.1039/b511502g
日期:——
[η5-CpRFe(CH3CN)(1,2-diphosphinobenzene)]+ complexes are readily formed from [η5-CpRFeL3]+ salts and act as template precursors for the intramolecular hydrophosphination of co-ordinated trivinylphosphine with 1,2-diphosphinobenzenes. This sequence constitutes a versatile synthetic route to a new class of co-ordinated triphosphacyclononanes bearing a rigid o-phenylene backbone link. The efficiency of the synthesis depends markedly upon the nature of the CpR ligand. The new secondary phosphine macrocycles prepared by this route are readily alkylated to tritertiary triphosphine macrocycles bearing alkyl and pendant functions.