The steric course of some electrophilic additions to the tetrahydropyridazine ring moiety of benzo[g]phthalazino[1,2-b]pyridazine-6,13-dione derivatives. I.
作者:M. Carmen Cano、Fernando Gómez-Contreras、Ana M. Sanz、María J.R. Yunta
DOI:10.1016/s0040-4020(01)80523-8
日期:1993.1
diazatetracyclic analogues of anthracyclinones via electrophilic addition of positive halogen sources has been investigated. Bromine azide, iodineazide, NBS/H2O/DMSO and NBS/EtOH were the reactants of choice. Dehydrohalogenation and further regiospecific addition products to the C-1/C-2 double bond have been found in most cases besides the expected addition compounds. Conformational homogeneity and trans-axial
通过亲电添加正卤素源,研究了蒽环二酮的二氮杂四环类似物中环A的功能化。叠氮化溴,叠氮化碘,NBS / H 2 O / DMSO和NBS / EtOH是选择的反应物。在大多数情况下,除预期的加成化合物外,还发现了C-1 / C-2双键的脱氢卤化和进一步的区域特异性加成产物。所有分离的化合物均显示出构象均质性和跨轴取向。已经评估了攻击物种对亲核步骤的影响以及羰基相邻基团对构象特征的影响。
Cano, M. C.; Contreras, F. Gomez; Sanz, A. M., Journal of Heterocyclic Chemistry, 1980, vol. 17, p. 1265 - 1271