A selective and efficient procedure for the carbonylative synthesis of polysubstituted maleimides was developed. With rhodium as the catalyst and acetylacetone (acac) as the ligand, various desired maleimide derivatives were isolated in moderate to excellent yields with good functional group tolerance from the corresponding internal alkynes and anilines.
Selectivity controllable divergent synthesis of α,β-unsaturated amides and maleimides from alkynes and nitroarenes via palladium-catalyzed carbonylation
A tunable procedure on palladium-catalyzed carbonylative divergent synthesis of α,β-unsaturated amides and maleimides from symmetrical internal alkynes and nitroarenes has been developed. By using Pd(acac)2/dppp/4-ClBSA/DMF and Pd(TFA)2/DPEphos/PTSA/H2O/toluene as the catalytic systems, a range of multi-substituted maleimides and α,β-unsaturated amides were selectively prepared in moderate to good
已开发了一种可调谐程序,可从对称内部炔烃和硝基芳烃上钯催化羰基发散性合成α,β-不饱和酰胺和马来酰亚胺。通过使用Pd(acac)2 / dppp / 4-ClBSA / DMF和Pd(TFA)2 / DPEphos / PTSA / H 2 O /甲苯作为催化体系,一系列多取代的马来酰亚胺和α,β-不饱和酰胺以Mo(CO)6为固体CO源,以硝基芳烃为廉价而丰富的氮源,以中等至良好的收率选择性地制备了这些化合物。