Rapidly Activating Pd-Precatalyst for Suzuki-Miyaura and Buchwald-Hartwig Couplings of Aryl Esters.

Rapidly Activating Pd-Precatalyst for Suzuki-Miyaura and Buchwald-Hartwig Couplings of Aryl Esters.
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快速激活铃木 - 米龙和芳基酯的布赫瓦尔德 - 哈特维格耦合的PD-催化剂。

DOI:
10.1021/acs.joc.7b02588
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发表时间:
2018-01-05
期刊:
The Journal of organic chemistry
影响因子:
--
通讯作者:
Mohadjer Beromi M
Mohadjer Beromi M
中科院分区:
其他
文献类型:
--
作者:
Dardir AH;Melvin PR;Davis RM;Hazari N;Mohadjer Beromi M

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酯由于其普遍存在和易于合成而成为交叉偶联的有价值的亲电试剂。然而,酯底物的有效交叉偶联传统上需要苛刻的条件。利用最近发现的预催化剂,钯催化的Suzuki-Miyaura和Buchwald-Hartwig反应涉及裂解的C(酰基)-O键的芳基酯,在温和的条件下进行的报告。Pd(II)预催化剂是高活性的,因为它比以前的预催化剂更快地还原成Pd(0)活性物质。
Esters are valuable electrophiles for cross-coupling due to their ubiquity and ease of synthesis. However, harsh conditions are traditionally required for the effective cross-coupling of ester substrates. Utilizing a recently discovered precatalyst, Pd-catalyzed Suzuki–Miyaura and Buchwald–Hartwig reactions involving cleavage of the C(acyl)–O bond of aryl esters that proceed under mild conditions are reported. The Pd(II) precatalyst is highly active because it is reduced to the Pd(0) active species more rapidly than previous precatalysts.
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