Enantioselective cyclopropane syntheses using the chiral carbene complexes (SFe)-and (RFe)-C5H5 (CO)(PR3) Fe: CHCH3+. A mechanistic analysis of the carbene …

…, EW Goldman, DA Timmers, GD Williams

Index: Brookhart, Maurice; Liu, Yumin; Goldman, Emma W.; Timmers, Debra A.; Williams, Gregory D. Journal of the American Chemical Society, 1991 , vol. 113, # 3 p. 927 - 939

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Citation Number: 76

Abstract

Abstract: Enantiomerically pure or enriched iron-carbene complexes of the type CSH5 (CO)(PR,) Fe= CHCH3+ have been prepared by three routes:(a) Diastereomeric acyl complexes CSH5 (CO)(PPh2R*) FeC (0) CH3 (R*=(S)-2-methylbutyl) have been prepared, separated by column chromatography, and converted by using standard techniques to (SFe, Sp)- and (RFeSp)-CsH5 (CO)(PPh2R*) Fe= CHCH,+;(b) Enantiomerically enriched (76% ...