A Microwave Assisted Diazo Coupling Reaction: The Synthesis of Alkylazines and Thienopyridazines
摘要:
Heating diazoaminobenzene with active methylene compounds 1-3 in microwave oven in acetic acid, in the presence of hydrochloric acid, afforded the corresponding arylhydrazones 5-7. These reaction products were condensed with ethyl cyanoacetate in a domestic microwave oven after 1-2 minutes heating to yield the pyridazinones 8-12. Compounds 8c and 12 reacted with sulfur in basic DMF solution, in microwave oven using MORE technology to yield the thienopyridazinone 14 and 16 respectively. While 17 was produced when 8b was treated like wise with sulfur and DMF in the presence of piperidine. Compounds 16 coupled with aromatic diazonium salts to yield arylazo derivatives 21a-c.
2-(4-Naphtho[1,2-<i>d</i>]furan-2-yl-1,3-thiazol-2-yl)-ethanenitrile in Heterocyclic Synthesis
作者:Abdou O. Abdelhamid、Mohamed A. M. Alkhodshi
DOI:10.1080/10426500590885066
日期:2005.7.1
Coumarin, thiazole, and 2,3-dihydro.1,3,4-thiadiazole derivatives were synthesized front 2(4-naphtho[1,2- d]furan-2-yl-1,3-thiazol-2-yl)ethanenitrile and different reagents. Structures of the new compounds were elucidated oil the basis of elemental analysis, spectral data, and alternative methods of synthesis whenever possible.
Negm, A. M.; Abdelrazek, F. M.; Elnagdi, M. H., Egyptian Journal of Chemistry, 1994, vol. 37, # 5, p. 509 - 518
作者:Negm, A. M.、Abdelrazek, F. M.、Elnagdi, M. H.、Shaaban, Lina H.
DOI:——
日期:——
IBRAHIM, NADIA SOBHY;MOHAMED, MONA HASSAN;ELNAGDI, MOHAMED HILMY, CHEM. AND IND.,(1988) N 8, 270-271
MANSOUR, SALWA A.;ELDEIB, WAFAA M.;ABDOU, SADEK E.;DABOUN, HAMED A., SULFUR LETT., 6,(1987) N 6, 181-190
作者:MANSOUR, SALWA A.、ELDEIB, WAFAA M.、ABDOU, SADEK E.、DABOUN, HAMED A.
DOI:——
日期:——
A Microwave Assisted Diazo Coupling Reaction: The Synthesis of Alkylazines and Thienopyridazines
作者:Saleh Al-Mousawi、Abdel-Zaher Elassar、Morsy Ahmed El-Apasery
DOI:10.1080/10426500500536457
日期:2006.8.1
Heating diazoaminobenzene with active methylene compounds 1-3 in microwave oven in acetic acid, in the presence of hydrochloric acid, afforded the corresponding arylhydrazones 5-7. These reaction products were condensed with ethyl cyanoacetate in a domestic microwave oven after 1-2 minutes heating to yield the pyridazinones 8-12. Compounds 8c and 12 reacted with sulfur in basic DMF solution, in microwave oven using MORE technology to yield the thienopyridazinone 14 and 16 respectively. While 17 was produced when 8b was treated like wise with sulfur and DMF in the presence of piperidine. Compounds 16 coupled with aromatic diazonium salts to yield arylazo derivatives 21a-c.