Organocatalytic one-pot asymmetric synthesis of 6-trifluoromethyl-substituted 7,8-dihydrochromen-6-ol
作者:Kosuke Nakashima、Asako Minai、Yuichi Okuaki、Yasuyuki Matsushima、Shin-ichi Hirashima、Tsuyoshi Miura
DOI:10.1016/j.tetlet.2022.153733
日期:2022.4
A squaramide organocatalyst efficiently promoted the asymmetric Friedel–Crafts alkylation of α,β-unsaturated trifluoromethyl ketones with aromatic alcohols in a one-pot procedure, affording corresponding 6-trifluoromethyl-substituted 7,8-dihydrochromen-6-ol derivatives (up to 94% yield, 74% ee).
方酸酰胺有机催化剂在一锅法中有效地促进了 α,β-不饱和三氟甲基酮与芳香醇的不对称 Friedel-Crafts 烷基化反应,得到了相应的 6-三氟甲基取代的 7,8-dihydrochromen-6-ol 衍生物(最多 94 % 产率,74% ee)。