Isothiourea-Catalyzed [2 + 2] Cycloaddition of C(1)-Ammonium Enolates and N-Alkyl Isatins.
Isothiourea-Catalyzed [2 + 2] Cycloaddition of C(1)-Ammonium Enolates and N-Alkyl Isatins.
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DOI:
10.1021/acs.orglett.2c02170
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发表时间:
2022-07-29
期刊:
影响因子:
5.2
通讯作者:
Smith, Andrew D.
中科院分区:
文献类型:
--
作者:
Abdelhamid, Yusra;Kasten, Kevin;Dunne, Joanne;Hartley, Will C.;Young, Claire M.;Cordes, David B.;Slawin, Alexandra M. Z.;Ng, Sean;Smith, Andrew D.
Enantioselective [2 + 2] cycloaddition of C(1)-ammonium enolates generated catalytically using the isothiourea HyperBTM with N-alkyl isatins gives spirocyclic β-lactones. In situ ring opening with an amine nucleophile generates isolable highly enantioenriched products in up to 92:8 dr and in >99:1 er.
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