The asymmetric addition of 2,2,2-trifluorodiazoethane to styrene derivatives to give optically active trifluoromethylphenyl cyclopropanes (ee values up to 69%) was carried out by using chiral iron and ruthenium porphyrins as homogeneous and heterogeneous catalysts.
No takes yet. Share an insight, caveat, or question.
Simonneaux et al. (2006) studied this question.