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Efficient Kinetic Resolution in the Asymmetric Transfer Hydrogenation of 3-aryl-indanones: Applications to a Short Synthesis of (+)-indatraline and a Formal Synthesis of ()-tolterodine

Overview
Journal RSC Adv
Specialty Chemistry
Date 2022 Apr 28
PMID 35480442
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Abstract

Efficient kinetic resolution (KR) occurs in asymmetric transfer hydrogenation (ATH) reactions of racemic 3-aryl-1-indanones using commercial (,)- or (,)-Ts-DENEB as a catalyst, a 1 : 5 mixture of HCOH and EtN as a hydrogen source and MeOH as solvent. This process at room temperature produces near equal yields of -3-arylindanols with high dr and ee, and unreacted 3-arylindanones with excellent ee. Stereoselective transformations of 3-arylindanols and 3-arylindanones, generated by using the ATH-KR protocol, were carried out to form (+)-indatraline and synthetically valuable ()-6-methyl-4-phenylcoumarine, which is a key intermediate in the preparation of ()-tolterodine, ()-4-aryl-3,4-dihydroquinoline-2(1)-one and ()-4-aryl-3,4-dihydroisoquinoline-1(2)-one.

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Manier S, Mumber P, Zapp J, Eckstein N, Meyer M Metabolites. 2024; 14(6).

PMID: 38921476 PMC: 11205633. DOI: 10.3390/metabo14060342.

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