Manganese (III) acetate mediated synthesis of polysubstituted pyrroles under solvent-free ball milling
作者:Ji-Chao Zeng、Hui Xu、Fei Yu、Ze Zhang
DOI:10.1016/j.tetlet.2017.01.016
日期:2017.2
Under solvent-freeballmilling conditions, a simple and mild method was developed for efficient synthesis of 2,5-dimethyl-3,4-dicarboxylate-pyrroles and N-substituted 3,4-diphenylpyrroles via condensation-annulation of amines with acetoacetate and 2-phenylacetaldehyde, respectively. The use of cheap and safe Mn(OAc)3 as a mediator, no use of commonly employed acetic acid as solvent, short reaction
HYPERVALENT IODINE IN SYNTHESIS. 62: A TANDEM DIMERIZATION-CYCLOCONDENSATION OF ENAMINE-ESTERS WITH [BIS(TRIFLUOROACETOXY)-IODO]BENZENE: A METHOD OF SYNTHESIS OF HIGHLY SUBSTITUTED PYRROLES
作者:Peng-Fei Zhang、Zhen-Chu Chen
DOI:10.1081/scc-100103979
日期:2001.1
A tandem dimerization-cyclocondensation of enamine-esters with [bis(trifluoroacetoxy)iodo]benzene( BTI) provides an effective method for synthesis of highly substituted pyrroles.