Piperidinium iodide

Formyl-5-nitrothiophene, AD67 N-(2-Formyl-2-propyl)-N-methyI-piperidinium iodide, AS75... 

N-[4-(3-ethyl-2-benzothiazolylidene)-2- M butenylidene]piperidinium iodide 3-ethyl-2-(4-piperidino-1,3-butadien-yl)benzothiazolium iodide 483 5.2 B141 8293... 

Imaginative applications of the Sommelet rearrangement testify its remarkable potential for organic synthesis. For example, the ring enlargement of 2-phenyl-1,1-dimethylpyrrolidinium and -piperidinium iodide to the azabenzocycloalkanes 341a " and has been accomplished in this way (Scheme 1-267). 

Disulfides can be prepared by treatment of alkyl halides with disulfide ions and also indirectly by the reaction of Bunte salts (see 10-41) with acid solutions of iodide, thiocyanate ion, or thiourea, or by pyrolysis or treatment with hydrogen peroxide. Alkyl halides also give disulfides when refluxed with sulfur and NaOH, and with piperidinium tetrathiotungstate or piperidinium tetrathiomolybdate. ... 

From Sodium or Piperidinium Tellurocarboxylates and Alkyl Iodides... 

Methyl 2-methoxy (tellurobenzoate) was also obtained from piperidinium 2-methoxy(tellurobenzoate) and methyl iodide in dichloromethane at — 30°. 

Ammoninm (Piperidino-methyl)-trimethyl- -bromid E16a, 1008 (N-Aminomethylier.) Formamidinium N,N -Dimethyl-N,N -dipropyl-(iodid) E5, 94 (N-Alkylier.) N,N,N, N -Tetraethyl- (methylsulfat) E5, 90 (OR - NR2) Piperidinium l-(Dimethylamino-methyl)-l-methyl- -bromid E16a, 1008 (N-Aminomethylier.)... 

Methylpiperidine A-oxide as the hydrobromide and 1-methyl-piperidinium as the iodide were obtained in 0.2% yield [266). 

C15H22INO, (+)-1,3-Dimethyl-3-benzoylpiperidine methiodide, 42B, 188 CisH22N2f 2,6-cis-Dimethylpiperidyl-N-phenylacetamidine, 45B, 240 C15H23IN2O, N-Methyl-piperidinium-acet-o-methyl-anilide iodide, 41B, 285... 

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