A novel approach to enantiopure cyclopropane compounds from biotransformation of nitrilesElectronic supplementary information (ESI) available: preparation of racemic nitrile, amides and acids; spectroscopic data of racemic nitriles; biotransformation of racemic amides; chiral HPLC analyses of nitriles, amides, acids and amines. See http://www.rsc.org/suppdata/nj/b2/b200110a/