Rcf. Jones et al., CYCLOADDITION OF HOMOCHIRAL IMIDAZOLINIUM YLIDES - A ROUTE TO OPTICALLY-ACTIVE PYRROLOIMIDAZOLES, Tetrahedron letters, 37(10), 1996, pp. 1707-1710
The synthesis of either enantiomer of 1-benzyl-4-phenyl-2-imidazoline
from phenylglycine is described. 'One-pot' generation and enantioselec
tive 1,3-dipolar cycloaddition of homochiral azomethine ylides prepare
d from these imidazolines with a range of alkene dipolarophiles afford
s optically active hexahydropyrroloimidazole adducts.