Functionalized 4-Aminoquinolines by Rearrangement of Pyrazole N-Heterocyclic Carbenes
作者:Andreas Schmidt、Niels Münster、Andrij Dreger
DOI:10.1002/anie.200905436
日期:2010.4.1
Thermal decarboxylation of 1‐phenylpyrazolium‐3‐carboxylates from the mesomeric betaine class of substances leads to pyrazole‐N‐heterocyclic carbenes, which immediately rearrange to multiply substituted 4‐aminoquinolines (see scheme). These species are of interest for the synthesis of heterocycles and pharmacologically active compounds.