Mild and ambient annulations for pyrrole synthesis from amines and arylacetaldehydes
作者:Huawen Huang、Lichang Tang、Jinhui Cai、Guo-Jun Deng
DOI:10.1039/c5ra24006a
日期:——
A mild and ambient pyrrolesynthesis via copper-catalyzed aerobic cyclization of alkylamines and arylacetaldehydes is described. This method provided alternative access to a range of 1,3,4-trisubstituted pyrroles under environmentally friendly reaction conditions.
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