An Organocatalytic Domino Thia-Michael/Aldol Condensation Reaction: Highly Enantioselective Synthesis of Functionalized Dihydrothiophenes
作者:Jie Tang、Dan Qian Xu、Ai Bao Xia、Yi Feng Wang、Jun Rong Jiang、Shu Ping Luo、Zhen Yuan Xu
DOI:10.1002/adsc.201000245
日期:2010.9.10
An organocatalytic domino thia‐Michael/aldol condensation reaction of α, β‐unsaturated aldehydes with 1, 4‐dithiane‐2,5‐diol catalyzed by chiral diphenylprolinol TMS ether has been developed, which provides a new practical and direct route to chiral dihydrothiophenes with high yields (up to 90%) and excellent enantioselectivities (up to>99% ee). The catalytic mechanism of the domino reaction was further
4-alkyl cyclohexanepropanal compounds and their use in perfume compositions
申请人:International Flavors & Fragrances Inc.
公开号:US07834219B1
公开(公告)日:2010-11-16
The present invention is directed to novel 4-alkyl cyclohexanepropanal compounds and a method of improving, enhancing or modifying a fragrance formulation through the addition of an olfactory acceptable amount of the novel compounds.