Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687217 |
![]() |
|||||||
Title: | Synthesis of chiral amines by reductive dynamic kinetic resolution | ||||||
Author: | Zhao, Peichao |
ISNI:
0000 0004 5922 7445
|
|||||
Awarding Body: | University of Sheffield | ||||||
Current Institution: | University of Sheffield | ||||||
Date of Award: | 2015 | ||||||
Availability of Full Text: |
|
||||||
Abstract: | |||||||
Recently a heterocyclic organocatalyst for preparation of chiral imines has been developed by Jones group, for the reduction of a series of N-arylimines by trichlorosilane giving very good yield and enantioselectivities. Following previous research, this project extends the application of the organocatalyst 117 for preparation of chiral amines with two stereogenic centers by reductive dynamic or kinetic resolution. Reduction of the imine derived from 2-phenylpropionaldehyde suffered a competitive background reaction without catalyst giving racemic product. In terms of asymmetric reduction of 2-substituted imines, both 2-methylcyclohexanone imine and 2-methyltetralone imine gave moderate yields (51%) and enantioselectivities (25%). A number of imines of 3-substituted indanone were reduced using only 1 mol% catalyst by trichlorosilane giving the corresponding chiral amines with good yields (10-65%), excellent enantioselectivities (80-96%) and diastereoselectivities (up to 90:1).
|
|||||||
Supervisor: | Jones, Simon | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.687217 | DOI: | Not available | ||||
Share: |