7625-02-7Relevant academic research and scientific papers
The decomposition reaction of 4-acetylsydnones arylhydrazones
Kuo, Wen-Fa
, p. 1171 - 1176 (2000)
The acidic decomposition of 4-acetylsydnones arylhydrazones 2 results in the formation of 4-arylhydrazo-1,2-pyrazolin-5-ones 3 and 4-arylamino-2,2,3-triazoles 4, respectively. The reactions of 4-acetylsydnones 1 with arylhydrazines 5 afford compounds 3 as
Room temperature diazotization and coupling reaction using a DES-ethanol system: A green approach towards the synthesis of monoazo pigments
Kamble, Sujit Suresh,Shankarling, Ganapati Subray
supporting information, p. 5970 - 5973 (2019/05/27)
An environmentally benign, one-pot diazotization and coupling reaction using ChCl:tartaric acid DES at room temperature is described. The bulky tartrate ion renders stability to the diazonium salt at room temperature, also evidenced by 1H NMR.
Chemistry of diazocarbonyl compounds: XXVIII. Reaction of acyclic N-arylsulfonylacetamides with Rh(II)-carbenoids as a new synthetic route to alkyl acetimidoates
Selivanova,Nikolaev,Kostikov,Nikolaev,Siler,Schulze
, p. 1792 - 1799 (2007/10/03)
A new procedure was proposed for the synthesis of alkyl acetimidoates via alkylation of the carbonyl group in N-arylsulfonylacetamides with Rh(II)-carbenoids. The procedure ensures preparation in good yield of acetimidoates having a polyfunctionalized O-alkyl group. The obtained alkyl acetimidoates in crystal exist as E isomers with respect to the C=N bond and as s-cis conformers relative to the C-OCHRR' bond. Alkyl N- arylsulfonylacetimidoates react with ammonia and hydrazine hydrate to give in good yield the corresponding carboximidamides(hydrazides) via replacement of the O-alkyl group. Unlike structurally related compounds having simple alkyl or aryl groups on the nitrogen atom, N-arylsulfonylacetimidoates readily undergo hydrolysis in the presence of moisture and traces of acids.
