Chemical Communications p. 2497 - 2504 (1996)
Update date:2022-08-05
Topics:
Iwata, Chuzo
Takemoto, Yoshiji
The ability of iron tricarbonyl units to control the regio- and stereo-chemistry of nucleophilic addition to a neighbouring C=X (X = O, N) double bond and 1,5-nucleophilic substitution via a η5-cation intermediate are described. We investigated the potential of acyclic [Fe(diene)(CO)3] complexes as chiral auxiliaries for the asymmetric synthesis of natural products. The asymmetric syntheses of (+) and (-)-frontalin, a hydroxyethylidene dipeptide isostere, a piperidine alkaloid (SS20846A), and N-Boc-O-Me-(2R,3S,5E,7E)-2-aminotetradeca-5,7-dien-3-ol were achieved by using the stereodirecting ability and mobility of the Fe(diene)(CO)3 group. In addition, we developed an efficient method for synthesizing chiral dienal Fe(CO)3 complexes, which are versatile starting materials for the asymmetric synthesis of the biologically active natural products described above.
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