Gao, Xinyue; Shi, Xiaoqing; Yang, Dianna; Jin, Hao; Zhou, Xinghua; Meng, Tianzi; Li, Xin; Jia, Zixing; Zhang, Xuewen; Wu, Zeyu; Wang, Chunnong; Zeng, Taining; Liu, Li; Ai, Chao; Zhu, Huajie published the artcile< Highly efficient axially biscarboline ethers as catalysts used in 1,2- and 1,4-transfer hydrogenations of ketimines and β-enamino esters>, Formula: C11H12O3, the main research area is arylaminopropenoate enantioselective transfer hydrogenation axial chiral catalyst; arylaminopropanoate ethyl stereoselective preparation; ketimine axial chiral catalyst enantioselective transfer hydrogenation; phenylalkylaniline stereoselective preparation.
A series of new axial chiral biscarboline ethers were synthesized using L-tryptophan amino acid after dehydrogenation and oxidations using m-CPBA. These diastereoisomers can be obtained by column chromatog. and used as catalysts in asym. hydrogenation reactions of β-enamine esters and ketimines. Chiral catalysts (R)- and (S)-I exhibited very high enantioselectivity in the reactions. For example, a high up to 98% ee was achieved in the enantioselective hydrogenations when only 1 mol% of catalyst was used.
Journal of Molecular Structure published new progress about Amino acid esters Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Formula: C11H12O3.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics