Synthesis of 2,5-Dibutyl-3,6-dimethyl-1<i>H</i>,2<i>H</i>,4<i>H</i>,5<i>H</i>-pyrrolo[3,4-<i>c</i>]pyrrole-1,4-dione: A Diketopyrrolopyrrole Scaffold for the Formation of Alkenyldiketopyrrolopyrrole Compounds
作者:Daijun Feng、George Barton、Colleen N. Scott
DOI:10.1021/acs.orglett.9b00019
日期:2019.4.5
manuscript describes an unprecedented and efficient synthesis of a new DPP scaffold, 2,5-dibutyl-3,6-dimethyl-1H,2H,4H,5H-pyrrolo[3,4-c]pyrrole-1,4-dione (DMDPP), containing methyl groups at the 3,6-positions as a precursor to preparing 3,6-divinyl-substituted DPP compounds. Subsequently, following the synthesis of DMDPP, we performed an efficient and mild C–H functionalization of the methyl groups
该手稿描述了一种新型DPP支架2,5-二丁基-3,6-二甲基-1 H,2 H,4 H,5 H-吡咯并[3,4- c ]吡咯-1, 4-二酮(DMDPP),在3,6-位含有甲基,是制备3,6-二乙烯基取代的DPP化合物的前体。随后,在合成DMDPP之后,我们用各种芳香醛对甲基进行了有效而温和的C–H官能化,以中等至良好的产率合成了3,6-二乙烯基取代的DPP化合物的第一个实例。