Aryne Trifunctionalization Enabled by 3-Silylaryne as a 1,2-Benzdiyne Equivalent
Aryne Trifunctionalization Enabled by 3-Silylaryne as a 1,2-Benzdiyne Equivalent
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3-甲硅烷基芳基作为 1,2-苯并二炔等价物实现芳炔三官能化
DOI:
10.1021/acs.orglett.8b00469
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发表时间:
2018-04-06
期刊:
影响因子:
5.2
通讯作者:
Li, Yang
中科院分区:
文献类型:
--
作者:
Lv, Chunjie;Wan, Caiwen;Li, Yang
An unprecedented aryne 1,2,3-trifunctionalization protocol from 2,6-bis(silyl)aryl triflates was developed under transition-metal-free conditions. The reaction of generated 3-silylaryne with both pyridine N-oxide and N-hydroxylamide afforded o-silyl triflate/tosylate in a one-pot transformation, allowing the formation of 2,3-aryne precursors with various vicinal pyridinyl/amido substituents. These pyridinyl-substituted 2,3-aryne intermediates exhibit a broad scope of reactivity with diverse arynophiles in good yields and high selectivity.