Pyrrolidinium chloride

CN (la,3p,5a)-3-[(hydroxydiphcnylacetyl)oxy]spiro[8-azoniabicyclo[3.2. l]octane-8,r-pyrrolidinium] chloride... 

Das aus 2-Allyl-3-benzyl-pyrrolidinium-chlorid durch Reaktion mit Benzolsulfensaure-chlorid erhaltene Thiiranium-Salz wird durch Umsetzung mit Kaliumcarbonat und Na-triumjodid in Acetonitril in ]-Benzyloxy-6-phenylthio-hexahydropyrrolizin (66%) umgela-gert2. 

A block copolymer consisting of poly(cthylcnc-b-butene) oligomer and N,lf -di mcth I pyrrolidinium chloride, ( ), was prepared by Koroskenyi et al. 

Preparation of poly(styrene-ft-methyl pyrrolidinium chloride)... 

Additional antistatic block copolymers such as poly[(cthylene-co-propylene)-b-methyl pyrrolidinium chloride] were prepared by the authors (1) in an earlier... 

Condensation of 2-chloro-A -pyrrolidinium chloride (prepared in situ from iV-benzylpyrrolidin-2-one 194 and phosgene) with f-butyl 3-oxo-4-pentenoate, followed by acid treatment under ultrasound irradiation condi-... 

G., Syntheses, crystal structures, and polymorphism of quaternary pyrrolidinium chlorides, CrystEngComm 10 (6), 748-752 (2008). 

The enamino ketone (49) was reported to give no identifiable products on reaction with N,N-dimethyl carbamoyl chloride 63). However, reaction of (49) with N,N-diethyl carbamoyl chloride in refluxing chlorobenzene gave the N-(3-diethyl-amino-5,5-dimethylcyclohex-2-en-1 -ylidene)pyrrolidinium salt, isolated as the perchlorate. The latter must have been formed as outlined in Scheme I, involving initial O carbamoylation followed by an addition-elimination reaction to give 138 cation which can react with diethylamino anion by a further addition-elimination displacement to give the product 46). 

Chemical Name Spiro(8-azoniabicyclo[3.2.1]octane-8,l -pyrrolidinium), 3-((hydroxydiphenylacetyl)oxy)-, chloride, (la,3 5,5a)- chloride... 

Separation science focuses on room temperature ionic liquids (RTlLs), salts that are liquid at ambient temperature. They have been studied as extracting solvents, stationary and mobile phases, mobile phase additives, and other uses. Common RTILs consist of a bulky nitrogen- or phosphorus-containing organic cation (pyridinium or pyrrolidinium, alkyl-imidazolium, ammonium or phosphonium) and a variety of organic and inorganic anions (triflate, dicyanamide, trifluoroacetate, acetate trifluo-romethylsulfate, nitrate, perchlorate, bromide, chloride, chloroaluminate, tetrafluo-roborate, hexafluorophosphate). 

Pyrrolidinium 1-(Methoxy-methyl)-l-(methylthio-methyl)- -chlorid... 

Pyrrolidinium 1-Pyrrolidinomethy-len- (chlorid) E5, 89 (Amin + NaOR/CHCtj)... 

Subsequently, we were able to completely reduce the unsaturated 5-membered poly(N,N-dimethyl-3-pyrrolidinium bromide) to yield completely saturated 5-membered rings. The NMR of this reduced polymer material gave a spectrum that was the same as that obtained from poly(N,N-dimethyldiallylammonium chloride) which unequivocally shows that the cyclopolymerization produces... 

The propionate derivative of oxazolidinone 214 was allowed to condensate with the aldehyde 215 to furnish 216 in 87% yield. Borohydride reduction of 216 gave diol 217. Selective tosylation of the primary alcohol resulted in spontaneous cyclization to give the pyrrolidinium tosylate salt, which was converted to its chloride salt 218 in 83% yield. Selective mono-deprotection of the salt afforded the free hydroxyl 219, which was acetylated and then subjected to hydrogenolysis in the presence IM hydrochloric acid to allow the isolation of the C(4)Me analogue 220 as its hydrochloride salt in quantitative yield. 

Ionic liquids (ILs) with their outstanding solvent properties, that is, high conductivity, tunable polarity, zero volatility, and high thermal stability, are of growing interest in different fields of application including as a solvent component in microemulsions [6,7]. Thus, the tunable polar properties are of special interest. Therefore, ILs can be used as polar [8-11] as well as nonpolar solvents [12,13], Moreover, ILs can show amphiphilic behavior [14] and are called IL sirnfactants [15], Their physical properties can be adjusted in a characteristic way by varying the molecular structure of ILs. Since the ILs are sterically mismatched ions, they hinder crystal formation. Different cations, for example, ammonium, phosphonium, sulfonium, imidazolium, pyridinium, or pyrrolidinium, with different anions, for example, chloride, bromide, iodide, fluoroborate, or fluorophosphates, can be selected for a broad range of combinations [6]. 

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