Efficient Synthesis of β-CF<sub>3</sub>/SCF<sub>3</sub>-Substituted Carbonyls via Copper-Catalyzed Electrophilic Ring-Opening Cross-Coupling of Cyclopropanols
作者:Yong Li、Zhishi Ye、Tabitha M. Bellman、Teng Chi、Mingji Dai
DOI:10.1021/acs.orglett.5b00782
日期:2015.5.1
The first copper-catalyzed ring-opening electrophilic trifluoromethylation and trifluoromethylthiolation of cyclopropanols to form Csp3–CF3 and Csp3–SCF3 bonds have been realized. These transformations are efficient for the synthesis of β-CF3- and β-SCF3-substituted carbonyl compounds that are otherwise challenging to access. The reaction conditions are mild and tolerate a wide range of functional
已经实现了第一个铜催化的环丙醇开环亲电三氟甲基化和三氟甲基硫醇化形成C sp3 -CF 3和C sp3 -SCF 3键。这些转化对于合成β-CF 3 -和β-SCF 3 -取代的羰基化合物是有效的,否则这些化合物很难获得。反应条件温和,可耐受多种官能团。还报道了用于 LY2409021 的简明合成,这是一种用于 2 型糖尿病临床试验的胰高血糖素受体拮抗剂。