Qualitative Reaction of Active Methylene Group. II
نویسندگان
چکیده
منابع مشابه
Reaction of 1-alkylthioisoquinolinium salts with active methylene compounds.
2-Alkyl-1-alkylthioisoquinolinium salts were readily prepared from 2-alkyl-1(2H)-isoquinolones via 2-alkyl1(2H)-thioisoquinolones in two steps. Under mild conditions, the reaction of 2-alkyl-1-alkylthioisoquinolinium salts with active methylene compounds in the presence of sodium hydride afforded 2-alkyl-1-(substituted methylene)iso-quinolines in good yields. Pyrrolo[2,1-a]isoquinolines were sy...
متن کامل[Reaction of pyridinium and quinolinium salts having the leaving group at the 2- or 4-position with active methylene compounds].
The reactions of 2- or 4-cyanopyridinium salts with active methylene compounds such as dimethyl malonate, malononitrile, and cyclohexane-1,3-dione affording 2- or 4-(substituted methylene) pyridines are described. Similar reactions of 4-cyano-2-methylthiopyridinium and 4-cyano-2-methylthioquinolinium salts, both of which have two leaving groups, were readily prepared from 4-cyano-1-methyl-2(1H)...
متن کاملL-Proline catalyzed reaction of N-confused porphyrin and active methylene compounds.
Active methylene compounds such as acetone, butanone, cyclopentanone, nitromethane, malononitrile, ethyl 2-cyanoacetate, diethyl malonate, and ethyl acetylacetate react with the C3 position of N-confused porphyrin in the presence of L-proline in refluxing THF-EtOH affording a variety of N-confused porphyrin derivatives in moderate yield. L-Proline catalyzes the reaction facilitating the formati...
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this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
15 صفحه اولBlood-group-Ii-active gangliosides of human erythrocyte membranes.
More than ten new types of gangliosides, in addition to haematoside and sialosylparagloboside, were isolated from human erythrocyte membranes. These were separated by successive chromatographies on DEAE-Sephadex, on porous silica-gel columns and on thin-layer silica gel as acetylated compounds. Highly potent blood-group-Ii and moderate blood-group-H activities were demonstrated in some of the g...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1950
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.70.7-8_439