Iron-Mediated Allylic Substitution Reactions with Chirality Transfer. Stereochemistry of the Formation of Diastereo- and Enantiomerically Enriched Olefinic and Allylic Tetracarbonyl Iron Complexes
作者:Dieter Enders、Bernd Jandeleit、Stefan von Berg、Gerhard Raabe、Jan Runsink
DOI:10.1021/om010343l
日期:2001.10.1
15‘/‘ ‘ (Acc = CO2Me) (48% − quant.; de < 3−70%), each diastereomer in enantiopure form (Note: descriptors ‘ and ‘ ‘ denote major and minor diastereomer). Synthetically useful results were obtained for allylic ligands bearing a benzylic protecting group [(S)-6a and (S)-8] and using hexane or diethyl ether as solvent (14a‘/a‘ ‘: quant., de = 70%; 15‘/‘ ‘: 75−88%, de = 10−16%). Complexes 14a‘/a‘ ‘ were