中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-(4-溴苯基)-2-丙炔-1-醇 | 3-(4-bromophenyl)prop-2-yn-1-ol | 37614-58-7 | C9H7BrO | 211.058 |
(4-溴苯基)乙炔 | 4-bromo-1-ethynylbenzene | 766-96-1 | C8H5Br | 181.032 |
3-(4-溴苯基)丙炔酸 | 3-(4-bromophenyl)-2-propynoic acid | 25294-65-9 | C9H5BrO2 | 225.041 |
—— | 3-(4-bromophenyl)prop-2-ynamide | 1231209-48-5 | C9H6BrNO | 224.057 |
—— | 1-bromo-4-bromoethynyl-benzene | 934-94-1 | C8H4Br2 | 259.928 |
An efficient transformation towards propynoates and propynenitriles is herein described. The practical methodology was conducted at low temperature (–78 or –60 °C) in a one-pot manner with the assistance of base rather than any transition metal catalysts. The base-induced protocol exhibits good functional group tolerance (up to 28 examples) and high efficiency (up to 92% yields) towards substituted acetylenes of great synthetic significance, which was also well demonstrated by the gram-scale reactions.