Extension of the Simmons-Smith reaction to metal-carbynes: efficient synthesis of metallacyclopropenes with σ-aromaticity.
Extension of the Simmons-Smith reaction to metal-carbynes: efficient synthesis of metallacyclopropenes with σ-aromaticity.
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DOI:
10.1039/d0sc03215h
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发表时间:
2020-09-03
期刊:
影响因子:
8.4
通讯作者:
Xia H
中科院分区:
文献类型:
--
作者:
Huang F;Zheng X;Lin X;Ding L;Zhuo Q;Wen TB;Zhang H;Xia H
The Simmons–Smith reaction offers a direct route for conversion of an alkene into a cyclopropane with a zinc carbenoid as the active intermediate. Zinc carbenoids, however, have never delivered a methylene unit to substrates with metal–carbon multiple bonds. Herein, we describe this type of reaction and the construction of three-membered rings has now been applied in organometallic systems by combining classical zinc carbenoid reagents with a range of structurally and electronically diverse metal carbynes. A variety of metallacyclopropene derivatives prepared in this way represent rare examples with σ-aromaticity in an unsaturated three-membered ring. The structures of such products are supported by experimental observations and theoretical calculations. Extending Simmons–Smith reaction to metal-carbyne systems leads to the access of metallacyclopropenes with σ-aromaticity.
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