A new α-selective synthetic equivalent for the crotyl anion in additions to imines

Autor: Manfred Heuschmann, Johannes Betz
Rok vydání: 1995
Předmět:
Zdroj: Tetrahedron Letters. 36:4043-4046
ISSN: 0040-4039
DOI: 10.1016/0040-4039(95)00670-8
Popis: Two equivalents of vinylmagnesium bromide add to imines 1 in the presence of cerium trichloride to form homoallylic amines 3 as 2:1-adducts, Z-diastereomers being preferred by a margin of 88:12 to 71:29. Suitable chiral imines 1g-i are transformed to l- products l- 3g-i with high diastereoselectivity.
Databáze: OpenAIRE