Reactions of 1-Aryl- And 2,3-Diaryl- 5-Diazo-6,6-Dimethyl-4-Oxo-4,5,6,7-Tetra- Hydroindazoles with N-Ethyl- and N-Phenyl-Substituted Maleimides
Chemistry of Heterocyclic Compounds
2009
Inta Strakova,
Māris Turks,
Ērika Bizdēna,
Sergejs Beļakovs,
Andrejs Tokmakovs,
Andris Strakovs
[3+2] Cyclocondensation reactions of a series of 1,3- and 2,3-disubstituted 5-diazo-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazoles with N-ethyl- and N-phenyl-substituted maleimides have been used to obtain the corresponding 6,6-dimethyl-4,4',6'-trioxo-4,5,6,7-3',3'a,4',5',6',6'a-decahydrospiro-[indazole-5,3'-pyrrolo[3,4-c]pyrazoles]. On boiling these compounds in toluene nitrogen is split off and they are converted into 6',6'-dimethyl-2,4,4'-trioxo-4',5',6',7'-tetrahydro-1'H-spiro[3-azabicyclo-(3.1.0)hexane-6,5'-indazoles].
Atslēgas vārdi
1,3- and 2,3-substituted 5-diazo-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazoles, N-ethyl- and N-phenylmaleimides, [3+2] cycloaddition reactions.
DOI
10.1007/s10593-009-0298-3
Hipersaite
http://link.springer.com/article/10.1007/s10593-009-0298-3
Strakova, I., Turks, M., Bizdēna, Ē., Beļakovs, S., Tokmakovs, A., Strakovs, A. Reactions of 1-Aryl- And 2,3-Diaryl- 5-Diazo-6,6-Dimethyl-4-Oxo-4,5,6,7-Tetra- Hydroindazoles with N-Ethyl- and N-Phenyl-Substituted Maleimides. Chemistry of Heterocyclic Compounds , 2009, Vol.45, Iss.5, 545.-553.lpp. ISSN 0009-3122. e-ISSN 1573-8353. Pieejams: doi:10.1007/s10593-009-0298-3
Publikācijas valoda
English (en)