title: Facile kinetic induction of a dihydropyridide to pyrrolide ring contraction.
abstract: Reactions between magnesium 1,4-dihydropyridide or 1,2-dihydro-iso-quinolide derivatives and carbodiimides, RN[double bond, length as m-dash]C[double bond, length as m-dash]NR, generally result in Mg-N insertion and formation of guanidinate complexes. More sterically perturbed systems with N-aryl carbodiimide substitution, however, follow a divergent course of reaction initiating heterocyclic ring contraction and pyrrolide formation under unprecedentedly mild conditions.
authors: Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK. msh27@bath.ac.uk.
authors: David R
authors: DR
authors: Carbery
authors: Michael S
authors: MS
authors: Hill
authors: Mary F
authors: MF
authors: Mahon
authors: Catherine
authors: C
authors: Weetman