13174-91-9Relevant academic research and scientific papers
Pyrolysis of 1-substituted pyrazoles and chloroform at 550°C: Formation of α-carboline from 1-benzylpyrazoles
Bhatti, Inayat A.,Busby, Reginald E.,Bin Mohamed, Murtedza,Parrick, John,Shaw, C. J. Granville
, p. 3581 - 3585 (2007/10/03)
Pyrolysis of 13CH3 labelled 1-methylpyrazole 8 with chloroform at 550°C in a continuous flow reactor yields unlabelled 2-chloropyrimidine 9 and 2-cyanopyrrole 10 labelled at the cyano group. However, pyrolysis of 1-benzylpyrazole 14 with chloroform under similar conditions gives 9,2-phenylpyrimidine 13 and, as the major product, α-carboline 15. Pyrolysis of several substituted 1-(arylmethyl)pyrazoles and the use of 13C and 15N labelled compounds provides direct evidence by which the positions of 7 atoms of 1-benzylpyrazole can be located in the α-carboline. These data support the mechanisms suggested for the formation of 9, 10, and 15.
