میز خدمت الکترونیک
دوره ویراستاری

  اخبار و اعلانات

 آمار

تعداد نشریات126
تعداد شماره‌ها7,095
تعداد مقالات76,247
تعداد مشاهده مقاله151,757,388
تعداد دریافت فایل اصل مقاله113,834,930
. (1377). SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM. , 9(2), -.
. "SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM". , 9, 2, 1377, -.
. (1377). 'SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM', , 9(2), pp. -.
. SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM. , 1377; 9(2): -.

SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM

Journal of Sciences, Islamic Republic of Iran
مقاله 7، دوره 9، شماره 2، شهریور 1998    اصل مقاله (293.03 K)
چکیده
Diazotization of 3-amino-2-cMoro pyridine (3) in the presence of dithizone (5)
gave dphenyl-2-phenylazo-4H-pyrid[o3 ,2-e] [1,3,4] thiadiazine (6). Reaction of 2-
chloro-3-nitropyridine (2, G=H) with (5) dfordd 4-phenyl -2-phenylazo -4Hpyrido
[2,3-el [1,3,4] thiadiazine (7). Reduction of the latter with H gas in the
presence of Raney nickel gave the corresponding amino derivative (12). One pot
condensation and cyclization of the latter with phenacyl bromide gave a novel
heterocyclic system (13).
آمار
تعداد مشاهده مقاله: 970
تعداد دریافت فایل اصل مقاله: 1,213





سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب