(+/-)-Convolutamydine A (5) has been prepared by a concise synthesis from 3,5-dibromoaniline using a modified Sandmeyer methodology. The modified Sandmeyer methodology has also been found to be beneficial for the synthesis of other alpha-isonitrosoacetanilides. The 4,6-dibromohydroxyoxindole nucleus was further confirmed by comparison with the isomeric 5, 7-dibromohydraxyoxindole. (C) 1997 Elsevier Science Ltd.
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[Anonymous], 1931, J AM CHEM SOC, DOI [DOI 10.1021/JA01352A046, 10.1021/ja01352a046]