Publication: Thermische Reaktionen mit 3-Phenyl-2H-azirinen; 1,3-dipolare Cycloadditionen und En-Reaktionen
Thermische Reaktionen mit 3-Phenyl-2H-azirinen; 1,3-dipolare Cycloadditionen und En-Reaktionen
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Narasimhan, N. S., Heimgartner, H., Hansen, H.-J., & Schmid, H. (1973). Thermische Reaktionen mit 3-Phenyl-2H-azirinen; 1,3-dipolare Cycloadditionen und En-Reaktionen. Helvetica Chimica Acta, 56(4), 1351–1370. https://doi.org/10.1002/hlca.19730560419
Abstract
Abstract
Abstract
Benzonitrile p-nitrobenzylide (5) undergoes 1,3-dipolar cycloadditions in the presence of 3-phenyl-2H-azirines (1), yielding in benzene at 0° 2-(p-nitrophenyl)-4,5-diphenyl-1,3-diazabicyclo[3.1.0]hex-3-enes (7, scheme 2). Under the basic conditions of the reaction mixture, 7a and 7b are partially converted to 2-(p-nitrophenyl)-4,5-diphenyl-1,6-dihydropyrimidines 8a,b) which are dehydrogenated by oxygen to the corresponding pyrimidines 9a and 9b, respectively. 3-Phenyl-2H-azirines (1) form, on heating at 145° in xylene in the presence
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- Narasimhan, Nurani S
- Heimgartner, Heinz
- Hansen, Hans-Jürgen
- Schmid, Hans
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Citations
Narasimhan, N. S., Heimgartner, H., Hansen, H.-J., & Schmid, H. (1973). Thermische Reaktionen mit 3-Phenyl-2H-azirinen; 1,3-dipolare Cycloadditionen und En-Reaktionen. Helvetica Chimica Acta, 56(4), 1351–1370. https://doi.org/10.1002/hlca.19730560419
