期刊
CHEMICAL COMMUNICATIONS
卷 50, 期 88, 页码 13506-13509出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc05624h
关键词
-
资金
- National Natural Science Foundation of China [21121002, 21272119]
Phosphine-catalyzed [4+1] annulation of electron-deficient 1,3-dienes or 1,3-azadienes with maleimides has been successfully developed under very mild conditions, providing a convenient and highly efficient method for constructing 2-azaspiro[4.4]nonenes and 1,7-diazaspiro[4.4]nonenes. This reaction represents the first example of [4+1] cyclization between electron-deficient 4 pi-conjugated systems and non-allylic phosphorus ylides.
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