Katritzky AR, Hayden AE, Kirichenko K, Pelphrey P, Ji Y. A Novel Route to Imidoylbenzotriazoles and Their Application for the Synthesis of Enaminones.
J Org Chem 2004;
69:5108-11. [PMID:
15255745 DOI:
10.1021/jo0496594]
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Abstract
Reactions of secondary amides 2a-i with 1-chloro-1H-benzotriazole and triphenylphosphine give imidoylbenzotriazoles 3a-i. The treatment of 3a,b,e,g with silyl enol ethers 5a,b in the presence of potassium tert-butoxide provides a new general approach to enaminoketones 6a-h.
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