I. Paterson et al., 1,3-ASYMMETRIC INDUCTION IN THE ALDOL REACTIONS OF ALPHA-METHYLENE-BETA-ALKOXY ALDEHYDES, Tetrahedron letters, 34(27), 1993, pp. 4393-4396
The aldol reactions of the alpha-methylene-beta-alkoxy aldehydes 3 and
6 were examined for a range of Ti(IV), Sn(II), and B enolates. The se
nse and level of 1,3-asymmetric induction (up to 95% ds) varies with t
he enolate structure and the beta-hydroxyl protecting group in the ald
ehyde.