39695-64-2Relevant articles and documents
Synthesis of novel precursors of Pfitzinger reaction: A facile one-pot strategy to the synthesis of quinoline carboxylic acid derivatives of pyrazolo-carbazoles and azacarbazoles
Tyagi, Ruchi,Singh, Bhawani,Kishore
scheme or table, p. 431 - 435 (2012/08/07)
Interaction of 5-indazolyldiazonium chloride 2 with 2-hydroxymethylidene cyclohexanone 5 and N-benzyl-3-hydroxymethylidene-4-piperidone 6 under the conditions of Japp-Klingemann reaction, followed by Fischer-indolization of the resulting hydrazones, formed the 5,7,8,9-tetrahydropyrazolo[4,3-b]carbazol-6(1H) -one 9 and 9-benzyl-5,7,8,9-tetrahydropyrido[2′,3′:4,5]pyrrolo[2,3- f]indazol-6(1H)-one 10, respectively. Pfitzinger reaction of 9 and 10 with isatin in alkali afforded the corresponding quinoline carboxylic acid derivatives 12 and 13, respectively. [Figure not available: see fulltext.]
The synthesis of E-2-(bromomethylene)cyclohexanone and E-2-(bromomethylene) cycloheptanone
Banwell, Martin G.,Ma, Xinghua,Willis, Anthony C.
, p. 93 - 98 (2007/10/03)
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Formylation of o-silylated enolates by Vilsmeier's reagent
Jameleddine, Khiari,Bechir, Ben Hassine,Mustapha, Mhirsi
, p. 2759 - 2762 (2007/10/03)
Reaction of trimethylsilylenol ethers and Vilsmeier's reagent leads to the corresponding regiocontrolled β-dicarbonyl compounds with high to good yields.
