Metalloradical activation of α-formyldiazoacetates for the catalytic asymmetric radical cyclopropanation of alkenes.

Metalloradical activation of α-formyldiazoacetates for the catalytic asymmetric radical cyclopropanation of alkenes.
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DOI:
10.1039/c7sc00658f
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发表时间:
2017-06-01
期刊:
影响因子:
8.4
通讯作者:
Zhang XP
Zhang XP
中科院分区:
化学1区
文献类型:
--
作者:
Xu X;Wang Y;Cui X;Wojtas L;Zhang XP

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For the first time, α-formyldiazoacetates (FDA), have been successfully applied for asymmetric olefin cyclopropanation via Co(ii)-based metalloradical catalysis. For the first time, α-formyldiazoacetates have been successfully applied for the asymmetric cyclopropanation of alkenes via Co(ii)-based metalloradical catalysis. The cobalt(ii) complex of the D 2-symmetric chiral amidoporphyrin [Co(3,5-Di t Bu-ChenPhyrin)] is an effective metalloradical catalyst that can activate α-formyldiazoacetates to cyclopropanate both aromatic and aliphatic olefins with varied electronic properties, affording the synthetically useful 1,1-cyclopropaneformylesters in high yields with both high diastereo- and enantioselectivity.
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