Formation of Quaternary Carbon Center with a Trifluoromethyl Group Using a Pd-Catalyzed Allylation Reaction
作者:Kazuyuki Sato、Yu Takiguchi、Yosuke Yoshizawa、Kayoko Iwase、Yoshie Shimizu、Atsushi Tarui、Masaaki Omote、Itsumaro Kumadaki、Akira Ando
DOI:10.1248/cpb.55.1593
日期:——
Synthesis of compounds with quaternary carbons is one of the most attractive reactions in the synthetic chemistry. However, there are only a few reports on synthesis of the compounds with a fluoroalkyl group at a quaternary carbon center. Recently, we reported the synthesis of alpha-trifluoromethylated ketones by the reaction of alpha,beta-unsaturated ketones with CF(3)-I using a Rh catalyst. When
具有季碳的化合物的合成是合成化学中最有吸引力的反应之一。然而,关于在季碳中心具有氟代烷基的化合物的合成的报道很少。最近,我们报道了通过使用Rh催化剂将α,β-不饱和酮与CF(3)-I反应,合成α-三氟甲基化酮。当用Pd催化剂处理α-三氟甲基化的酮和碳酸烯丙酯时,烯丙基化反应在三氟甲基化的碳上平稳地进行,以良好的收率良好地得到具有三氟甲基化的季碳中心的所需化合物。