El-Barbary, A. A.; Scheibye, S.; Lawesson, S.-O., Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1980, vol. 34, # 8, p. 597 - 602
作者:El-Barbary, A. A.、Scheibye, S.、Lawesson, S.-O.、Fritz, H.
DOI:——
日期:——
EL-BARBARY A. A.; SCHEIBYE S.; LAWESSON S.-O.; FRITZ H., ACTA CHEM., SCAND., 1980, B34, NO 8, 791-797
作者:EL-BARBARY A. A.、 SCHEIBYE S.、 LAWESSON S.-O.、 FRITZ H.
DOI:——
日期:——
Facile Synthesis of New Spirothiadiazolopyridazines by 1,3‐Dipolar Cycloaddition
作者:S. Abouricha、E. M. Rakib、N. Benchat、M. Alaoui、H. Allouchi、B. El Bali
DOI:10.1080/00397910500182697
日期:2005.8.1
Abstract New derivatives of the spiro type of pyridazines have been synthesized by 1,3‐dipolarcycloaddition of N‐aryl‐C‐ethoxycarbonylnitrile imines with pyridazin‐3(2H)‐thiones. When the nitrile oxide was used, the corresponding pyridazin‐3(2H)‐one was obtained from the intermediate spirooxathiazole by elimination of isothiocyanate group. The peri‐ and regioselectivity of the reaction were ascertained