Azetidine based ligands in boron catalyzed asymmetric Diels-Alder reactions
摘要:
The preparation of a new class of azetidine-based auxiliaries and their selectivity in the BBr3 catalyzed Diets-Alder reaction is described. The results are compared with a similar proline-derived ligand and a known prolinol auxiliary. Results show that selectivities are highly dependent on the dienophile and the substituent of the chiral auxiliary. (C) 1998 Elsevier Science Ltd. All rights reserved.
The preparation of a new class of azetidine-based auxiliaries and their selectivity in the BBr3 catalyzed Diets-Alder reaction is described. The results are compared with a similar proline-derived ligand and a known prolinol auxiliary. Results show that selectivities are highly dependent on the dienophile and the substituent of the chiral auxiliary. (C) 1998 Elsevier Science Ltd. All rights reserved.