Rhodium-Catalyzed Intramolecular Hydroarylation of 1-Halo-1-alkynes: Regioselective Synthesis of Semihydrogenated Aromatic Heterocycles
作者:Hirohiko Murase、Kousuke Senda、Masato Senoo、Takeshi Hata、Hirokazu Urabe
DOI:10.1002/chem.201303008
日期:2014.1.3
The regioselective intramolecular hydroarylation of (3‐halo‐2‐propynyl)anilines, (3‐halo‐2‐propynyl) aryl ethers, or (4‐halo‐3‐butynyl) aryl ethers was efficiently catalyzed by Rh2(OCOCF3)4 to give semihydrogenated aromatic heterocycles, such as 4‐halo‐1,2‐dihydroquinolines, 4‐halo‐3‐chromenes, or 4‐(halomethylene)chromans, in good to excellent yields. Some synthetic applications taking advantage of
Rh 2(OCOCF 3)有效催化(3-卤代-2-丙炔基)苯胺,(3-卤代-2-丙炔基)芳基醚或(4-卤代-3-丁炔基)芳基醚的区域选择性分子内氢芳基化反应。4生成半氢化芳环,如4-卤代1,2-二氢喹啉,4-卤代3-色环或4-(卤代亚甲基)吡喃,收率良好至优异。还说明了利用产品的卤素取代基进行合成的一些应用。