Jh. Li et al., A novel stereoselective synthesis of maleate derivatives via palladium-catalyzed dicarboalkoxylation of terminal alkynes, SYN COMMUN, 29(21), 1999, pp. 3733-3738
Alkynes were dicarboalkoxylated efficiently and stereoselectively in high y
ields reacting for about 2h under atmospheric pressure of carbon monoxide a
t room temperature using a catalytic amount of PdCl2 and a stoichiometric a
mount of CuCl2.