The extended Vilsmeier reaction of dimethoxy-activated indoles

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Vilsmeier-Haack Reaction with 2,3,3-Trimethyl-3H-benzo[g]indole and Its Conversion into 2-(1-aryl-1H-pyrazol-4-yl)-3,3-dimethyl-3H-benzo[g]indoles

Vilsmeier-Haack reaction of 2,3,3-trimethyl-3H-benzo[g]indole, then aqueous basic work-up, leads to benzo[g]indol-2-ylidene- malondialdehydes. These react with various arylhydrazines and quinolin-2-ylhydrazine to form 3,3-dimethyl-2-(1-aryl-1H-pyrazol-4-yl)- 3H-benzo[g]indoles in good yields.

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ژورنال

عنوان ژورنال: Arkivoc

سال: 2020

ISSN: 1551-7012

DOI: 10.24820/ark.5550190.p011.399