期刊
ORGANIC LETTERS
卷 17, 期 11, 页码 2864-2866出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b01260
关键词
-
资金
- Natural Sciences and Engineering Research Council
- University of Ottawa
- American Chemical Society
The use of photoredox catalyst [Au-2(dppm)(2)]Cl-2 to initiate free-radical cyclizations onto indoles is reported. Excitation of the dimeric Au(I) photocatalyst for the reduction of unactivated bromoalkanes and bromoarenes is used for the generation of carbon-centered radicals. Previous to this work, reduction processes leading to indole functionalization utilizing photoredox catalysts were limited to activated benzylic or a-carbonyl-positioned bromoalkanes. This method offers a mild and safe alternative to organostannanes and pyrophoric initiators for access to high energy radicals that were previously inaccessible through catalytic or stoichiometric means.
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