نتایج جستجو برای: 2 methylamino pyridine
تعداد نتایج: 2531457 فیلتر نتایج به سال:
Planar chirality associated with the ferrocene in ferrocenyl oximes and hydrazones bearing chiral auxiliaries effectively competes with or overrides the normally excellent stereocontrol afforded by the auxiliary in determining the diastereoselectivity of addition to the C=N bond.
در این پایان نامه، ابتدا به شرح روش تهیه و بررسی خواص طیفی و مغناطیسی چهار کمپلکس کروم(iii) و دو کمپلکس منگنز(ii) با فرمول های بسته cr(l)3 ، cr2(l)2(oh)5(ch3coo) ، mn(l)4cl2 و mn(l)4(no3)2 پرداخته شده است که در آن هاl= 2-carboxylic acid pyridine ، 2-amino-4-methyle pyridine، 2-amino-3-methyle pyridine ،3-methanol pyridine و acid hydrazide 4-pyridine carboxylic می باشد. در ادامه، دو لیگاند با...
Selected 2,6-(disubstituted)purine 2',3'-didehydro-2',3'-dideoxynucleosides and 2',3'-dideoxynucleosides were prepared and evaluated. Treatment of 5'-protected ribonucleosides with phenoxythiocarbonyl chloride and 4-(dimethylamino)pyridine, or under Schotten-Baumann conditions, gave high yields of 2',3'-O-thionocarbonates that underwent Corey-Winter elimination. Treatment of unprotected ribonuc...
N, N΄-3, 4-di(methylamino)-1, 2, 5-oxadiazole (1f) was prepared by dehydration of N, N΄-3, 4-di(methylamino)glyoxime (2f) in aqueous potassium hydroxid at 170-180 ˚C. Under similar conditions N, N΄-3, 4-di(benzylamino)-1, 2, 5-oxadiazole (1c) and N, N΄-3, 4-di(isopropylamino)...
a new 2-[(4-substituted-phenyl-3-chloroazetidin-2-one)-5-(2'-methylamino 4-phenyl-1', 3'-thiazolyl-]-1, 3, 4-thiadiazoles, 5(a-n) were synthesized from 2-substituted-benzylideneamino-5-[2'-methylamino-4'-phenyl-1',3'-thiazolyl]-1,3, 4-thiadiazole, 4(a-n) using 2-amino-4phenyl-1, 3-thiazole as a starting material. the synthesised compounds have been screened in vitro for their antimicrobial acti...
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