Media type: E-Article Title: Asymmetric cyclopropanation of chalcones using chiral phase-transfer catalysts Contributor: Herchl, Richard; Waser, Mario imprint: Elsevier BV, 2013 Published in: Tetrahedron Letters Language: English DOI: 10.1016/j.tetlet.2013.02.095 ISSN: 0040-4039 Keywords: Organic Chemistry ; Drug Discovery ; Biochemistry Origination: Footnote: