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Please login to access the full content or check if you have access via16.13.1.1.3.2.2 Method 2: From N-Arylcarbodiimides or N-Arylketenimines and Ethyl Aminocarbonylcarbamate or N,N-Disubstituted Cyanamides
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Kikelj, D., Science of Synthesis, (2004) 16, 618.
Aromatic or mixed carbodiimides and ketenimines react with ethyl aminocarbonylcarbamate in boiling dimethylformamide to give the corresponding 2-substituted quinazolin-4(3H)-ones 78 (Scheme 54).[401] The reaction of N-aryl-substituted ketenimines with N,N-disubstituted cyanamides or dimethyl cyanocarbonodithioimidoate under high pressure affords N,N-disubstituted quinazolin-4-amines 79 and 80. These products are formed by [4 + 2] cycloaddition between the aza-diene moieties of the N-aryl-substituted ketenimines and the cyano groups.[402]
Meeeee 88 Meeeeeeeee-8(8M)-eeee eee M,M-Meeeeeeeeeeee Meeeeeeeee-8-eeeeee eeee M-Meeeeeeeeeeeeeeee ee M-Meeeeeeeeeeeeee[888,888]
Meeeeeeeeeee Meeeeeeee
Meeeeeeeee-8-eeeeee 88; Meeeeee Meeeeeeee:[888]
M eeeeeeeeee eeeeeee ee e eeeeeeeeee (8.8 eeee) eee e eeeeeeeee (8.8 eM) ee e eeeeee Meeeee eeee eee eeeeeeeeee ee 888 MMe, eeeeee ee 888°M, eee eeeeeeeeee eee 88 e ee e eeee-eeeeeeee eeeeeeeee. Mee eeeeeeeee eeeeeee eee eeeeeeeeeeeeeee (eeeeee eee, MM8Me8/eeeeeee/MeMM 888:8:8).
References
| [401] | Meeeeee, M., Meeeeeeeeeee, (8888) 88, 8888. |
| [402] | Meeeeee, M.; Meeee, M.; Meeeeee, M.; Meee, M.; Meeeeee, M., Meee. Meeee. Meee., (8888) 88 888. |
Meeeeee Meeeeeeeeee
- 8.Meeeee-Meee, (8888) M 88-8, 8888.
- 8.Meeeee-Meee, (8888) M 88-8, 8888.
- 8.Meeeee-Meee, (8888) M 8e8, 88.
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