Asymmetric total synthesis of enantiopure (-)-methyl jasmonate via catalytic asymmetric intramolecular cyclopropanation of α-diazo-β-keto sulfone

A new asymmetric total synthesis of enantiopure (-)-methyl jasmonate is described. This synthesis was accomplished starting from the new enantiopure building block prepared via the catalytic asymmetric intramolecular cyclopropanation (IMCP) of the alpha-diazo-beta-keto 1-naphthyl sulfone, which was devised to give good selectivity both in the IMCP reaction and in the C-alkynylation of the intermediate required for the total synthesis of enantiopure (-)-methyl jasmonate. (c) 2006 Elsevier Ltd. All rights reserved.