Preparation of 2,3-Disubstituted Indoles by Sequential Larock Heteroannulation and Silicon-Based Cross-Coupling Reactions.
Preparation of 2,3-Disubstituted Indoles by Sequential Larock Heteroannulation and Silicon-Based Cross-Coupling Reactions.
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DOI:
10.1016/j.tet.2008.10.043
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发表时间:
2009-04-18
期刊:
影响因子:
2.1
通讯作者:
Baird JD
中科院分区:
文献类型:
--
作者:
Denmark SE;Baird JD
A simple and convergent synthesis of 2,3-disubstituted indoles has been developed using a sequential Larock indole synthesis and silicon-based, cross-coupling reaction. Substituted 2-iodoanilines reacted with an alkynyldimethylsilyl tert-butyl ether to afford indole-2-silanols under the Larock heteroannulation conditions after hydrolysis. The corresponding sodium 2-indolylsilanolate salts successfully engaged in cross-coupling with aryl bromides and chlorides to afford multi-substituted indoles. The development of an alkynyldimethylsilyl tert-butyl ether as a masked silanol equivalent enabled a smooth heteroannulation process and the identification of a suitable catalyst/ligand combination provided for a facile cross-coupling reaction.
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影响因子:
5.2
作者:
Denmark, SE;Baird, JD
通讯作者:
Baird, JD
影响因子:
5.2
作者:
Denmark, SE;Baird, JD
通讯作者:
Baird, JD
影响因子:
15
作者:
Barder, TE;Walker, SD;Buchwald, SL
通讯作者:
Buchwald, SL
影响因子:
4.3
作者:
Denmark, Scott. E.;Baird, John D.
通讯作者:
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影响因子:
1.8
作者:
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通讯作者:
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