期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 348, 期 10-11, 页码 1241-1247出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200606107
关键词
catalysis; epoxide; iron; ring expansion; salen ligands
The optimisation of the iron-catalysed ring expansion reaction of epoxyalkenes was considerably improved when the original phosphine ligand system [FeCl2(dppe)] was altered to include nitrogen-containing ligand systems. Especially, the very potent class of salen ligands gave the best results in inter-and intramolecular ring expansion reactions. With a preformed iron(Il)-salen complex the yields and diastereoselectivities were greatly enhanced and the scope of the reaction could also be enlarged.
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