期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 23, 期 55, 页码 13587-13590出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201703368
关键词
allenones; chiral phosphines; dihydropyrans; oxa-cycloaddition reaction; polyheterocyclic
资金
- 973 Programs [2015CB856600]
- National Natural Science Foundation of China [21372084, 21425205, 21672067]
- Changjiang Scholars and Innovative Research Team in University (PCSIRT)
An efficient ferrocene-derived bifunctional phosphine-catalyzed enantioselective oxa-[4+2] cycloaddition of -substituted allenones with a broad range of enones is investigated for the preparation of stereodefined dihydropyrans in good to excellent yields (up to 99%) and excellent enantioselectivity (up to 99% ee). Furthermore, a series of valuable chiral polyheterocyclic frameworks can be efficiently achieved in good yields with excellent enantioselectivities.
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