91132-63-7Relevant academic research and scientific papers
Synthesis of aminopyrazoles from α- oxoketene O,N-acetals using Montmorillonite K-10/Ultrasound
Braibante, Mara E. F.,Braibante, Hugo T. S.,Da Roza, Juliano K.,Henriques, Danielle M.,De Carvalho Tavares, Luciana
, p. 1160 - 1162 (2007/10/03)
5(3)-Amino-3(5) phenylpyrazoles 3a-f have been conveniently prepared by condensation of α-oxoketene O,N-acetals 2a-g with hydrazine using montmorillonite K-10 as solid support under sonication.
Synthesis of 5H-pyrido[2,3-c]-2-benzazepines
Troschutz,Grun
, p. 225 - 231 (2007/10/02)
The title compounds can be obtained by two different ways: Ring closure of 2-benzazepine enaminonitrile 1 and the C2-building blocks 2, 7 and 8 gives rise to the title compounds 6, 9 and 10. - The second way starts with Wolff-Kishner-reduction of the 2-amino-3-benzoylpyridines 16a,b to the 2-amino-3-benzylpyridines 18a,b. Benzoylation of 18a,b leads to the dibenzoylated compounds 20 and 21, respectively, which can be transformed to the monobenzoylated pyridines 22 resp. 23. Applying the Bischler-Napieralski-reaction on 22a,b and 23a,b leads to the 5H-pyrido[2,3-c]-2-benzazepines 24a,b and 25a,b. By means of 1H-, 13C- and 15N-NMR-data it is demonstrated that ethyl benzoylcyanacetimidate (12a) exists as benzoylketene-O,N-acetal 12a AE.
Novel Synthesis of Polyfunctionally Substituted Pyridines and Pyrimidines
Elghandour, Ahmed Hafez Hussien,Ramiz, Mahmoud Mohamed Mahfouz,Elnagdi, Mohamed Hilmy
, p. 775 - 777 (2007/10/02)
New syntheses of polyfunctionally substituted pyridines and pyrimidines by reaction of 3-amino-3-ethoxy-1-phenyl-2-propen-1-one with cinnamonitriles, or with acyl or aroyl isothiocyanates are reported.
