A facile approach to β-amino acid derivatives via palladium-catalyzed hydrocarboxylation of enimides with formic acid
作者:Jie Dai、Wenlong Ren、Haining Wang、Yian Shi
DOI:10.1039/c5ob01304f
日期:——
An effective Pd(0)-catalyzed hydrocarboxylation of enimides with formicacid in the presence of a catalytic amount of HCOOPh is described. A variety of β-amino acid derivatives are obtained in good yields with high regioselectivities without using external toxic CO gas.
A process of preparing thalidomide in which N-phthaloylglutamine or N-phthaloylisoglutamine is cyclized with N,N'-carbonyldiimidazole, characterised in that the process comprises heating said N-phthaloylglutamine or N-phthaloylisoglutamine and N,N'-carbonyldiimidazole in refluxing anhydrous tetrahydrofuran.