title: trans-Cyclopropyl beta-amino acid derivatives via asymmetric cyclopropanation using a (Salen)Ru(II) catalyst.
abstract: trans-Cyclopropyl beta-amino acid derivatives can be synthesized in five steps with excellent enantioselectivities using a chiral (Salen)Ru(II) cyclopropanation catalyst in the key asymmetry-induction step. This facile synthesis proceeds with high overall yield and can be used to prepare a number of carbamate-protected (Cbz and Boc are demonstrated) beta-amino acid derivatives.
mesh_terms: D000596:Amino Acids / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D018360:Crystallography, X-Ray; D003521:Cyclopropanes / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000596:Amino Acids; D003521:Cyclopropanes; D009942:Organometallic Compounds; D012428:Ruthenium