Enantioselective Addition of α-Nitroesters to Alkynes.
Enantioselective Addition of α-Nitroesters to Alkynes.
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DOI:
10.1002/anie.202014015
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发表时间:
2021-02-23
期刊:
影响因子:
--
通讯作者:
Dong VM
中科院分区:
文献类型:
--
作者:
Davison RT;Parker PD;Hou X;Chung CP;Augustine SA;Dong VM
By using Rh-H catalysis, we couple α-nitroesters and alkynes to prepare α-amino acid precursors. This atom-economical strategy generates two contiguous stereocenters, with high enantio- and diastereocontrol. In this transformation, the alkyne undergoes isomerization to generate a Rh(III)-π-allyl electrophile, which is trapped by an α-nitroester nucleophile. A subsequent reduction with In powder transforms the allylic α-nitroesters to the corresponding α,α-disubstituted α-amino esters. Making alkynes of C–C bonds. An enantioselective Rh-catalyzed addition of α-nitroesters to alkynes affords access to α-amino acid precursors containing contiguous stereocenters. These motifs can be further transformed into α-amino esters without stereoablation.
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