Synthesis and applications of (1 R ,5 S ,6 S )-6-(2,2-dimethylpropanamido)spiro[4.4]nonan-1-ol as a chiral auxiliary in Diels–Alder reactions
作者:Michael J. Burke、Murray M. Allan、Masood Parvez、Brian A. Keay
DOI:10.1016/s0957-4166(00)00242-1
日期:2000.7
2-dimethylpropanamido)spiro[4.4]nonan-1-ol 7 is described along with its application as a chiral auxiliary in various Diels–Alder reactions. The enantioselectivity of the Diels–Alder adducts ranged from 86–98% ee. The Diels–Alder adducts were easily removed from the chiral auxiliary and the latter was recyclized. The absolute and relative stereochemistry of 7 was determined from an X-ray crystalstructure of the