Asymmetric Induction by (S)-4-Isopropyl-1-phenylimidazolidin-2-thione in Titanium-Mediated Aldol Reactions and Its Application in Enantioselective Synthesis of (R)-Baclofen
作者:Vipin Nair、Gopal Khatik、Ravi Khurana、Varun Kumar
DOI:10.1055/s-0030-1260187
日期:2011.10
usefulness of (S)-4-isopropyl-1-phenylimidazolidin-2-thione as a chiral auxiliary in stereoselective propionate and acetate aldol reactions is discussed. Further, the enantioselective synthesis of (R)-baclofen by acetate aldol reaction using the chiral auxiliary was demonstrated. titanium - aldol reaction - asymmetric synthesis - chiral auxiliaries - stereoselectivity
讨论了(S)-4-异丙基-1-苯基咪唑烷基-2-硫酮作为手性助剂在立体选择性丙酸酯和乙酸羟醛反应中的用途。此外,证明了使用手性助剂通过乙酸酯醛醇缩醛反应的(R)-baclofen的对映选择性合成。 钛-Aldol反应-不对称合成-手性助剂-立体选择性