期刊
ORGANIC LETTERS
卷 16, 期 18, 页码 4814-4817出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol502302w
关键词
-
资金
- National Natural Science Foundation of China [21032005, 21272204, J1210042]
3-Aminopyrazoles and 4-iminopyrimidines were efficiently prepared via copper-catalyzed three-component reactions of butadiynes, sulfonylazides, and hydrazides or imidamides. The reactions were regioselectively approached via the formation of a beta-alkynyl-N-sulfonyl ketenimine intermediate which represented a new and effective 1,3-dielectrophilic equivalent in organic synthesis.
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