126940-56-5Relevant academic research and scientific papers
Amino acids in heterocyclic synthesis: Novel synthesis of pyrano[2,3-c]pyrazoles, pyrazolo[3,4-b]pyridine, and pyrido[1,2-a]benzimidazoles
Elgemeie, Galal H.,Elghandour, Ahmed H.,Hussein, Ahmed M.
, p. 3293 - 3302 (2004)
The diazolones 1a-c were reacted with triethylorthoformate and hippuric acid derivatives 3 to afford the novel pyrano[2,3-c]pyrazole derivatives 4. The latter undergoes ring cleavage by reaction with acetic acid-ammonium acetate and was transformed into the corresponding pyrazolo[3,4-b]pyridine derivatives 6. The reaction of 2-cyanomethyl-benzimidazole 7 with triethylorthoformate and hippuric acid derivatives 3 to give the pyrido[1,2-a]-benzimidazoles 10 has also been discussed.
A novel one-pot synthesis of substituted 5-benzoyl- and 5-acetylamino-1H,6H-pyranopyrazolones
Ahluwalia, Vinod K.,Garg, Vijay K.,Sharma, Mukesh K.,Sharma, R.
, p. 960 - 962 (2007/10/02)
A convenient one-pot synthesis of some 5-benzoyl- and 5-acetylamino-1H,6H-pyranopyrazolones (4) by the reaction of 2-pyrazolin-5-ones (1) with hippuric/aceturic acid and triethyl orthoformate in the presence of acetic anhydride, in good yield (75-8
Methyl 2-Benzoylamino-3-dimethylaminopropenoate in the Synthesis of Heterocyclic Systems. The Synthesis of Benzoylamino Substituted 7H-Pyranopyrimidine, 1H,6H-pyrano-pyrazole and 2H-1-benzopyran Derivatives
Stanovnik, Branko,Svete, Jurij,Tisler, Miha
, p. 1273 - 1276 (2007/10/02)
Methyl 2-benzoylamino-3-dimethylaminopropenoate (6) reacts with heterocyclic compounds containing an active methylene group or potential methylene group in the ring system, such as barbituric acid derivatives 1 and 2, pyrazolones 3 and 4, and resorcinol,
