Pyridine, 3-amino 5-ETHYL-2-METHYL

GFP hopo ICBP IP3 Ln3+ mal memal MLCK nota oxine par pdta pmea py quin-2 green fluorescent protein hydroxypyridinon(at)e intestinal calcium-binding protein inositol 1,4,5-triphosphate a lanthanide(III) cation malonate methylmalonate myosin light chain kinase 1,4,7-triazacyclononane-l,4,7-triacetate 8- hydroxyquinoline pyridine-2-azo-4 -dimethylaniline propylene-1,2-diaminetetraacetate 9- [2-(phosphonomethoxy)ethyl] adenine pjrridine pjrridyl 8-amino-2- [(2-amino-5-methylphenoxy )methyl] -6-methoxyquinoline-ATJV -tetraacetate 2- [ [2-[his(carboxymethyl)amino]-5-methyl-phenoxy] methyl] -6-methoxy-8- [bis(carboxymethyl) amino] quinoline]... 

Condensation (FeCl, ZnClj, HCl) of these amine salts with methyl vinyl ketone produced 4-methylthleno[2,3-/>]thieno[2,3-h]pyridine and 4-methylthieno[3,2-6]thieno[2,3-6]pyridine, respectively , while acetylacetone (ZnClj) afforded the 2,4-dimethyl derivatives. 5-Ethyl-2-formylthieno[2,3-Z>]thiophene (211) and nitromethane by the Knoevenagel method gave 2-/3-nitrovinyI-5-ethylthienol2,3-6]-thiophene (212) (73%) reduction (LAH) of 212 led to the 2-/3-amino-ethyl analog (213) lEq. (69)]. 

Reaction of methyl 4-amino-l-benzyl-l,2,5>6-tetrahydropyridine-3-carboxylate 601 with ethyl isothiocyanoacetate in refluxing pyridine or ethyl iV-[bis(methylthio)methylene]glycinate (BMMA reagent) in AcOH at reflux temperature gave the pyrido[4,3-r7 pyrimidines 603 and 604, respectively, via intermediate 602 (Equation 50) <2001H(55)115>. 

Propionitrile, 51 -Propylacetylene, 17 2,3-Pyrazinedicarboxylic acid, 86 Pyridine, 3-amino, 3 Pyridine, 5-ethyl-2-methyl, 41 Pyruvic aldehyde-sodium bisulfite, 88... 

AEH = 7-amino-4-methyl-5-aza-3-hepten-2-onato tren = tris(2-aminoethyl)amine phen = phenanthroline trien = trithylenetetramine TMDT = 1,1,7,7-tetramethyldiethylenetriamine im = imidazolate pip = 2-[2-(2-pyridyl)ethyl-iminomethyl]pyridine. 

V- 6-[2-(7-methyl[l, 8]naphthyridin-2-yl)ethyl]pyridine-2-yl acetamide 356 was prepared by the reaction of 2,7-dimethyl-l,8-naphthyridines 357 with n-butyllithi-um and 2-/V-acetylamino-6-bromomethylpyridine 358. Another carrier, viz., N-(l-methyl[l,8]naphthyridin-2-yl)-7V -(6-methylpyridin-2-yl)isophtalamide 359, was synthesized from 2-amino-7-methyl-l,8-naphthyridine 360, 2-amino-6-methylpyridine 226a and isophthaloyl chloride 361 in dry dichloromethane in the presence of tri-ethylamine. N,N -bis(l-mcl y [, 8]naphthyridin-2-yl)isophthalamide 362 was prepared from naphthyridines 360 and chloride 361 under analogous conditions. Isophthalamides 359 and 362 were used for the determination of L-( + )tartaric acid as complexes (1 1) soluble in chloroform (1999JIC661, 2001T4987). 

Tosyl chloride added to a stirred soln. of p-nitraniline in pyridine, and heated 30 min. on a steam bath under anhydrous conditions N-(p-nitrophenyl)-p-toluenesulfonamide (Y 95%) dissolved in dimethyl sulfoxide, treated with K-carbonate and 1,3-dibromopropane, stirred 5 days at room temp. N-(3-bromopropyl)-N-(p-nitrophenyl)-p-toluenesulfonamide (Y 80%) added to a mixture of ethyl acetoacetate, a 53.5%-dispersion of NaH in mineral oil, and ferf-butanol (previously warmed with stirring under anhydrous conditions until the NaH has dissolved and Hg-evolution ceased), refluxed 20 hrs. with stirring, and the resulting crude ethyl 2-acetyl-5-p-nitranilino)-N-(p-toluenesulfonyl)-valerate refluxed 48 hrs. with guanidine carbonate in ferf-butanol 2-amino-6-methyl-5- [ (N-p-toluenesulfonyl-p-nitranilino) propyl] -4-pyrimidinoI (Y 69%). F. e. s. B. R. Baker, D. V. Santi, and H. S. Shapiro, J. Pharm. Sci. 53, 1317 (1964). 

Chapter V. Quinaldine (V,2) 2-methyl-, 2 5-dimethyl- and 2-acetyl-thiophene (V,8-V,10) 2 5-dimethyl and 2 4-dimethyl-dicarbethoxy-p3nrole (V,12-V,13) 2-amino- and 2 4 dimethyl-thiazole (V,15-V,16) 3 5-dimethyl-pyrazole (V,17) 4-ethylp3rridine (from pyridine) (V,19) n-amyl-pyridines from picolines) (V,28) picolinic, nicotinic and isonicotinic acid (V,21-V,22) (ethyl nicotinate and p-cyanop3n idine (V,23-V,24) uramil (V,25) 4-methyl-(coumarin (V,28) 2-hyi-oxylepidine (V,29). 

The combined liquors, which comprise an aqueous hydrochloric acid solution of 3-amino-methyl-pyridine hydrochloride, are then heated to a temperature of 60° to 65°C, and ethyl nitrite gas is passed into the heated solution. The ethyl nitrite is generated by placing 20 liters of 90% ethyl alcohol in a suitable vessel, diluting with 200 liters of water, and, while stirring, adding to the dilute alcohol 18.3 kg of nitrosyl chloride at the rate of 2.25 kg per hour. (The process using methyl nitrite is carried out by substituting a stoichiometrically equivalent quantity of methyl alcohol for the ethyl alcohol.)... 

This starting material can be prepared as follows, 123 parts of finely powdered 6-amino-2,4-dimethylpyrimidine are suspended in 250 parts of dry pyridine and 222 parts of p-nitroben-zenesulfonyl chloride added at 50°C to 55°C. The whole is then warmed for 2 hours to 55°C, Water is added to the crystalline aggregate obtained, the precipitated bis-N-(p-nitrobenzene-sulfonyl)-6-amino-2,4-dimethylpyrimidine filtered off by suction and washed with water. It is purified by recrystallizing from methyl ethyl ketone. On slowly heating it decomposes on rapidly heating it melts at about 210°C to 215°C with decomposition. 

Methyl or ethyl chloroformate (70 mmol) was added dropwise to a stirred solution of a hydrazone derivative (60 mmol) of 2-amino-5-chlorobcnzophenone in a mixture of CIICI, (200 mL) and pyridine (15 mL) at 10 C. The mixture was left overnight and treated with a further amount of the alkyl chloroformate (40 mmol) and stirred at 20 C for 2 h. If /V-aryl-substituted hydrazones were used, the mixture was refluxed for 3-6 h. The mixture was poured into ice-water and the organic layer was washed successively with H2Oand 10% aq NaH0O3, dried (MgSO ) and evaporated in vacuo to yield 7 or 8 or a mixture of the two. 

Methyl- l-[methyl-(2-pyridin-2-yl-ethyl)amino]propane-2-thiol (108) is a tridentate N2S ligand with an aliphatic thiolate ligand. The single-crystal X-ray structures demonstrate that the zinc complexes are close structural analogs of the His2Cys site found in peptide deformylase.873... 

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