Bi(III) carboxylates as efficient reagents for preparation of esters under mild conditions. A new method for the protection of carboxylic acids
作者:El-Mehdi Keramane、Bernard Boyer、Jean-Pierre Roque
DOI:10.1016/s0040-4039(00)02125-0
日期:2001.1
been obtained by reaction of triphenylbismuth with various monocarboxylic acids. By a ligand-exchange reaction, these Bi(III) carboxylates react with tertiary or benzylic-type bromides and afford esters. This reaction sequence constitutes a new efficient way for the temporary protection of carboxylic acids under mild conditions.
通过三苯基铋与各种一元羧酸的反应获得了羧酸双(III)。通过配体交换反应,这些Bi(III)羧酸盐与叔或苄基溴化物反应并得到酯。该反应顺序构成了在温和条件下暂时保护羧酸的新有效途径。