期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 48, 页码 19310-19313出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja208364a
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资金
- Global COE, MEXT [B01]
- Grants-in-Aid for Scientific Research [10J02292, 23850001, 22106501] Funding Source: KAKEN
Supported phosphine-Rh systems, prepared in situ from silica-supported bridgehead monophosphines and [Rh(OH)(cod)]2, have enabled ortho-selective C-H borylation for a range of arenes containing nitrogen-based directing groups. The regioselectivity was excellent with various N-directing groups, including saturated and unsaturated N-heterocycles, tert-aminoalkyl groups, and iminetype C-N double bonds. The reaction showed significant tolerance toward steric repulsion around the reacting C-H bond. This Rh catalysis complements the Jr-catalyzed orthoborylation, which is effective for arenes with oxygen-based directing groups.
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