Thiourea fused γ-amino alcohol organocatalysts for asymmetric Mannich reaction of β-keto active methylene compounds with imines
作者:Miku Nomura、Zubeda Begum、Chigusa Seki、Yuko Okuyama、Eunsang Kwon、Koji Uwai、Michio Tokiwa、Suguru Tokiwa、Mitsuhiro Takeshita、Hiroto Nakano
DOI:10.1039/d2ra08317e
日期:——
asymmetric Mannich reaction of β-keto active methylene compounds with imines to afford chiral Mannich products, β-amino keto compounds, with continuous chiral centers, that are versatile synthetic intermediates for deriving various biologically active compounds. In particular, the thiourea fused γ-amino alcohols showed satisfactory catalytic activity in this reaction and afforded chiral Mannich products
在β-酮活性亚甲基化合物与亚胺的不对称曼尼希反应中检查了新型光学活性硫脲稠合γ-氨基醇的催化功能,以提供手性曼尼希产物,β-氨基酮化合物,具有连续手性中心,是通用的合成中间体用于衍生各种生物活性化合物。特别是,硫脲稠合的γ-氨基醇在此反应中表现出令人满意的催化活性,并以优异的化学产率(高达88%)和立体选择性(高达syn : anti /93 : 7 dr,高达99%)提供手性曼尼希产物。 ee)。