1 -Methyl-4- pyridinium Chloride

B) Preparation of 2-(Hydroxyiminomethyl)-1-Methyl Pyridinium Chloride An aqueous solution of 15 ml of 1-methyl-2-picolinium chloride having a concentration of 477 mg/ml Is covered with 50 ml of benzene in an atmosphere of nitrogen and cooled to below 10°C. An aqueous solution of sodium hydroxide is added dropwise and the mixture is stirred for 5 minutes and allowed to stratify. The aqueous phase Is then drawn off and the benzene solution is added slowly to a solution of 3 ml of nitrosyl chloride in 175 ml of benzene containing 0.5 ml of dimethyl formamide at about 10°C in an atmosphere of nitrogen with good agitation. The mixture is then stirred for 1.5 hours and then extracted with four... 

Also the positive membranes were of the collodion type at which poly-2-vinyl-N-methyl pyridinium chloride or protamine was adsorbed. 

Ionic liquids [e.g. l-ethyl-3-methylimidazolium triflate (mp. —9 C) l-n-butyl-3-methyl-pyridinium chloride (mp. 98 °C) tetra- -butyl-ammonium bromide (mp. 130 °C)]... 

Counterions of -onium compounds are not included in the formula heading. Thus, 1-methyl-pyridinium chloride appears under CgHgN (1-methylpyridinium) and not under CgHgClN. 

A great advance was made by the introduction of pyridinium compounds containing a long-chain aliphatic radical which could be split off on heat curing. The earliest of this range of products was Velan PF which is stearo-amido-methyl pyridinium chloride, (C17H35.CO.NH.CH2.N) 0, con-... 

Gemischte Benzoesaure-anhydride werden aus 2-Benzoylthio-l-methyl-pyridinium-chlorid(I) und carbonsauren Salzen erhalten. Hierzu wird 1-Methyl-2-thiono-l,2-dihydro-pyridin mit Benzoylchlorid in Chloroform/Wasser mit dem betreffenden Carboxylat oder mit der Carbonsaure in Gegenwart einer aquivalenten Menge Natronlauge umgesetzt92 ... 

Fig. 7.16 Final model of the stmcture of 2-(chloro-methyl)pyridinium chloride corresponding to nonm2-03.res.

CAS 6272-74-8 EINECS/ELINCS 228-464-1 Synonyms N-(Acylcolaminoformulmethyl) pyridinium chloride 1-(2-Hydroxyethyl)carbamoyl methyl pyridinium chloride laurate N-(Lauryl colamino formyl methyl) pyridinium chloride 1-[2-Oxo-2-[[2-[(1-oxododecyl) oxy] ethyl] amino] ethyl] pyridinium chloride Pyridinium, 1-(2-hydroxyethylcarbamoylmethyl)-, chloride, dodecanoate... 

N-(Lauryl colamino formyl methyl) pyridinium chloride. See Lapyrium chloride Lauryl diethanolamide. See Lauramide DEA Lauryl diethylenediaminoglycine CAS 6843-97-6 EINECS/ELINCS 229-930-7 Synonyms N-[2-[[-(Dodecylamino) ethyl] amino] ethyl] glycine Dodicin Glycine, N-[2-[[2-(dodecylamino) ethyl] amino] ethyl]-Classification Substituted amino acid Empirical C18H39N3O2 Formula ... 

N-(Stearoyl colamino formyl methyl) pyridinium chloride. See Steapyrium chloride Stearoyl diethanolamide. See Stearamide DEA Stearoyl glutamic acid CAS 3397-16-8 EINECS/ELINCS 222-252-2 Synonyms Glutamic acid, N-stearoyl- N-(1-Oxooctadecyl)-L-glutamic acid N-Stearoyl-L-glutamic acid Stearoylglutaminic acid Classification Substituted amino acid Empirical C22H43NO3 Formula ... 

Pyridinium ions likewise undergo dimerization on reduction. Thus, 1-methyl-pyridinium chloride yields the dimer 139 either with Na/Hg or by cathodic reduction... 

Amino-4,6-diacetamido-5-nitrosopyrimidine allowed to react with l-(cyano-methyl)pyridinium chloride and thiophenol in aq.-alc. NaOH 2,4,7-triamino-6-phenylthiopteridine. Y 71%. F. e., also with 4-amino-5-nitrosopyrimidines, s. W. W. Parish and H. Smith Broadbent, J. Heterocyclic Chem. 5, 527 (1971). 

Definition Hydroxyethylbutylamine salt of the sulfuric add ester of ethoxylated lau-ryl alcohol with 1-4 moles ethylene oxide Uses Surfactant and deanser In cosmetics ManufJDistrib. Somerset Cosmetic Co. fariati 1-(2-Hydroxyethyl)carbamoyl methyl pyridinium chloride laurate. See Lapyrium chloride... 

Hydroxyethyl) carbamoyl] methyl] pyridinium chloride, stearate. See Steapyrium chloride... 

N-(Lauryl colamino formyl methyl) pyridinium chloride. See Lapyrium chloride Lauryl diethanolamide. See Lauramide DEA... 

CAS 1341-08-8 14492-68-3 42566-92-7 EINECS/ELINCS 238-501-3 230635-5 Synonyms 1-[[(2-Hydroxyethyl) carbamoyl] methyl] pyridinium chloride, stearate 1-[2-Oxo-2-[[(1-oxooctadecyl) oxy] ethyl] amino] ethyl] pyridinium chloride Quaternium-7 N-(Stearoyl colamino formyl mefoyl) pyridinium chloride Classification Quaternary ammonium salt Ionic Nature Cationic Empirical C27H47N2O3 Cl Properties Wh. to It. cream powd. m.w. 483.21 Toxicology LD50 (IV, mouse) 56 mg/kg TSCA listed Uses Antimicrobial, antistat, emollient, emulsifier, foaming agent, cleanser, substantive agent, deodorant for cosmetics, toiletries, industrial applies. hair conditioner... 

In pyridinium chloride ionic liquids and in l,2-dimethyl-3-hexylimida2olium chloride ([HMMIMjCl), where the C(2) position is protected by a methyl group, only [PdClJ was observed, whereas in [HMIMjCl, the EXAFS showed the formation of a bis-carbene complex. In the presence of triphenylphosphine, Pd-P coordination was observed in all ionic liquids except where the carbene complex was formed. During the Heck reaction, the formation of palladium was found to be quicker than in the absence of reagents. Overall, the EXAFS showed the presence of small palladium clusters of approximately 1 nm diameter formed in solution. 

Pyridinium chloride ([PyHjCl) has also been used in a number ofcyclization reactions of aryl ethers (Scheme 5.1-4) [4, 18]. Presumably the reaction initially proceeds by deallcylation of the methyl ether groups to produce the corresponding phenol. The mechanism of the cyclization is not well understood, but Pagni and Smith have suggested that it proceeds by nucleophilic attack of an Ar-OH or Ar-0 group on the second aromatic ring (in a protonated form) [4]. 

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