Powerful control by organoruthenium catalysts of the regioselective addition to C(1) or C(2) of the prop-2-ynyl ethers CC triple bond
作者:Henri Doucet、Nadine Derrien、Zahia Kabouche、Christian Bruneau、Pierre H. Dixneuf
DOI:10.1016/s0022-328x(97)00435-x
日期:1998.1
HCCCR2OMe towards carboxylic acids is controlled to regioselectively afford the functional enol esters R1CO2C(CH2)CR2OMe or R1CO2CHCHCR2OMe corresponding to the addition of the carboxylate to either C(2) or C(1) of the terminal triple bond, depending on the nature of the ruthenium catalyst precursor RuCl2(PPh3)(p-cymene) or Ru(η3-2-methylpropenyl)2(dppe), respectively.
亲-2- ynylic醚HCCCR的催化活化2 OME朝向羧酸被控制以区域选择性地得到官能烯醇酯[R 1 CO 2 C(CH 2)CR 2 OME或R 1 CO 2 CHCHCR 2 OME对应于添加的羧酸盐与终端三键的任一C(2)或C(1),这取决于钌催化剂前体的RuCl的性质2(PPH 3)(p -cymene)或Ru(η 3 - 2-甲基丙烯基)2(dppe)。