期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 351, 期 17, 页码 2833-2838出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200900600
关键词
allenes; fluorenes; Schmittel cyclization; sequential reactions
资金
- National Natural Science Foundation of China [20732005, 20872127]
- National Basic Research Program of China [2009CB825300]
A stepwise process involving Sonogashira coupling, propargyl-allenyl isomerization and Schmittel cyclization has been realized, leading to an efficient synthesis of polycyclic fluorene derivatives from readily available starting materials. The reaction features the formation of three new carbon-carbon bonds to construct the benzene unit together with an efficient assembly of three or four rings in a single operative step.
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