Asymmetric synthesis of syn 1,2-diols via the reaction of aldehydes with chiral .gamma.-(tetrahydropyranyloxy)allylstannanes
摘要:
Asymmetric synthesis of syn 1,2-diols 3 has been accomplished via the reaction of the chiral gamma-alkoxy-substituted allylstannane 1 with aldehydes in the presence of AlCl3 or AlCl3.OEt2, followed by a five-step operation to remove the chiral auxiliary.