Benzylic C-H isocyanation/amine coupling sequence enabling high-throughput synthesis of pharmaceutically relevant ureas.

Benzylic C-H isocyanation/amine coupling sequence enabling high-throughput synthesis of pharmaceutically relevant ureas.
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DOI:
10.1039/d1sc02049h
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发表时间:
2021-08-04
期刊:
影响因子:
8.4
通讯作者:
Stahl SS
Stahl SS
中科院分区:
化学1区
文献类型:
--
作者:
Suh SE;Nkulu LE;Lin S;Krska SW;Stahl SS

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C(sp3)-H功能化方法为药物化学提供了理想的合成平台;然而,此类方法通常受到实际限制的限制。本研究概述了一种C(sp3)-H异氰酸化方案,该方案能够以高通量形式合成多种药学相关的苄脲。操作简单的C-H异氰酸化方法显示出高的位点选择性和良好的官能团耐受性,并且使用市售的催化剂组分和试剂[CuOAc、2,2 ′-双(恶唑啉)配体、(三甲基硅烷基)异氰酸酯和N-氟苯磺酰亚胺]。异氰酸酯产物可以不经分离或纯化而用于随后的与伯胺和仲胺的偶联步骤中,以提供数百种不同的脲。这些结果为在药物发现中实施C-H官能化/交叉偶联提供了模板。由市售试剂组成的铜基催化剂系统能够实现具有精确(杂)苄基位点选择性的C-H异氰酸化,从而能够通过与胺偶联高通量地获得药学相关的脲。
C(sp3)–H functionalization methods provide an ideal synthetic platform for medicinal chemistry; however, such methods are often constrained by practical limitations. The present study outlines a C(sp3)–H isocyanation protocol that enables the synthesis of diverse, pharmaceutically relevant benzylic ureas in high-throughput format. The operationally simple C–H isocyanation method shows high site selectivity and good functional group tolerance, and uses commercially available catalyst components and reagents [CuOAc, 2,2′-bis(oxazoline) ligand, (trimethylsilyl)isocyanate, and N-fluorobenzenesulfonimide]. The isocyanate products may be used without isolation or purification in a subsequent coupling step with primary and secondary amines to afford hundreds of diverse ureas. These results provide a template for implementation of C–H functionalization/cross-coupling in drug discovery. A copper-based catalyst system composed of commercially available reagents enables C–H isocyanation with exquisite (hetero)benzylic site selectivity, enabling high-throughput access to pharmaceutically relevant ureas via coupling with amines.
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发表时间: 2020-12-24
影响因子: 7.3
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发表时间: 1966-01-01
期刊: ACTA CHEMICA SCANDINAVICA
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期刊: ACTA CHEMICA SCANDINAVICA
影响因子: --
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