C7-derivatization of C3-alkylindoles including tryptophans and tryptamines.
C7-derivatization of C3-alkylindoles including tryptophans and tryptamines.
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DOI:
10.1021/jo502062z
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发表时间:
2014-11-21
期刊:
影响因子:
--
通讯作者:
Movassaghi M
中科院分区:
文献类型:
--
作者:
Loach RP;Fenton OS;Amaike K;Siegel DS;Ozkal E;Movassaghi M
A versatile strategy for C7-selective boronation of tryptophans, tryptamines, and 3-alkylindoles by way of a single-pot C2/C7-diboronation–C2-protodeboronation sequence is described. The combination of a mild iridium-catalyzed C2/C7-diboronation followed by an in situ palladium-catalyzed C2-protodeboronation allows efficient entry to valuable C7-boroindoles that enable further C7-derivatization. The versatility of the chemistry is highlighted by the gram-scale synthesis of C7-boronated N-Boc-L-tryptophan methyl ester and the rapid synthesis of C7-halo, C7-hydroxy, and C7-aryl tryptophan derivatives.
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