Application of alkane-diyl based chiral phosphine-aminophosphine (P-NP) and thioether-aminophosphine (S-NP) ligands in Rh-catalyzed asymmetric hydrogenation
作者:Gergely Farkas、Zsófia Császár、Evelin Tóth-Farsang、Attila C. Bényei、József Bakos
DOI:10.1016/j.jorganchem.2023.122723
日期:2023.8
the ligand backbone length, (ii) the N-substituent, (iii) the type of the coordinating functionality and (iv) the P-substituent in aminophosphine moiety on the stereo-electronic properties of the complexes. The novel Rh-compounds were tested in the asymmetric hydrogenation of a broad range of prochiral substrates including dimethyl itaconate, dehydroaminoacid derivatives and α,β-unsaturated enol ester
五种新型烷烃-二基膦-氨基膦(P,NP)型手性配体的铑(I)配合物(Ph 2 PCH(CH 3 )(CH 2 ) n CH(CH 3 )N(R 1 )PR 2 2 ( n = 0-2, R 1 = Me, Et, i Pr, R 2 = Ph, Cy))和硫醚-氨基膦类化合物(( S,S )-PhSCH(CH 3 )(CH 2 )CH( CH 3 )N( i Pr)PPh 2) 已经合成。通过核磁共振和红外光谱以及在一种情况下通过 X 射线晶体学对结构类似系统的配位化学的研究能够比较 (i) 配体主链长度,(ii) N-取代基,(iii)协调功能的类型和(iv) 氨基膦部分的 P-取代基对配合物立体电子特性的影响。新型 Rh 化合物在广泛的前手性底物的不对称氢化中进行了测试,包括衣康酸二甲酯、脱氢氨基酸衍生物和 α,β-不饱和烯醇酯膦酸酯。与类似的基于丁烷和己烷二基的系统和含硫醚的化合物相比,由戊烷-2