caa a22 4500 469049588 CHVBK 20180323132826.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF02973978 doi (NATIONALLICENCE)springer-10.1007/BF02973978 Reactions with halogenated compound: Synthesis of several new pyrazolo[3,2-c] triazine and 2-benzenesulfonylglyoxal arylhydrazone derivatives [Elektronische Daten] [Abdou Abdelhamid, Fawzy Attaby, Fathy Khalifa, Sami Ghabrial] Diazotized primary artomatic amines4 coupled with the ketosulfones1-3 in ethanol in the presence of sodium acetate at 0°C to afford the corresponding hydrazones5-7. Also diazotized 3-aminopyrazoles14 coupled with1-3 in ethanolic sodium acetate to give the pyrazolotriazines18-20 in good yields. Compounds5-7 and18 can also be obtained from the reaction of hydrazidoyl halides8-10 and21 with sodium benzenesulfinate. The hydrazones11-13 can easy be oxidized to the hydrazones5-7, using hydrogen peroxide in acetic acid. The Pharmaceutical Society of Korea, 1992 Hydrazones nationallicence pyrazolotriazines nationallicence hydrazidoyl halides nationallicence aminopyrazoles nationallicence ketosulfones nationallicence Abdelhamid Abdou Department of Science, King Khalid Military Academy, P.O. Box 22140, 11495, Riyadh, Saudi Arabia aut Attaby Fawzy Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt aut Khalifa Fathy Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt aut Ghabrial Sami National Organization for Drug Control and Research, P.O. Box 29, Cairo, A.R. Egypt aut Archives of Pharmacal Research Pharmaceutical Society of Korea 15/1(1992-03-01), 14-19 0253-6269 15:1<14 1992 15 12272 https://doi.org/10.1007/BF02973978 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02973978 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abdelhamid Abdou Department of Science, King Khalid Military Academy, P.O. Box 22140, 11495, Riyadh, Saudi Arabia aut NATIONALLICENCE 700 1- Attaby Fawzy Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt aut NATIONALLICENCE 700 1- Khalifa Fathy Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt aut NATIONALLICENCE 700 1- Ghabrial Sami National Organization for Drug Control and Research, P.O. Box 29, Cairo, A.R. Egypt aut NATIONALLICENCE 773 0- Archives of Pharmacal Research Pharmaceutical Society of Korea 15/1(1992-03-01), 14-19 0253-6269 15:1<14 1992 15 12272 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer