Methyl transfer in quaternary alkylammonium salts, derivatives of 1,4:3,6-dianhydrohexitols
Karol Sikora , Andrzej Nowacki , Beata Liberek , Barbara Dmochowska
AbstractAn unexpected side-reaction took place during the synthesis of quaternary ammonium salts with O-triflyl derivatives of 1,4:3,6-dianhydrohexitols and tertiary alkylamines. The products were identified as tertiary amine derivatives of 1,4:3,6-dianhydrohexitol and tetraalkylammonium triflate. It was found that formation of the products was the consequence of the methyl group migration from QAS formed to the amine present in excess in the reaction mixture. Such reaction is a case of transquaternization, in which the exchange of the methyl group between two amines occurs.
|Journal series||Journal of Molecular Structure, ISSN 0022-2860, e-ISSN 1872-8014, (N/A 70 pkt)|
|Publication size in sheets||0.50|
|Keywords in English||Quaternary ammonium salts, methyl transfer, 1,4:3,6-dianhydro-D-glucitol, 1,4:3,6-dianhydro-D-mannitol, transquaternization|
|ASJC Classification||; ; ;|
|License||Other; published final; ; with publication|
|Score||= 70.0, 12-05-2020, ArticleFromJournal|
|Publication indicators||= 0.000; : 2018 = 0.807; : 2018 = 2.120 (2) - 2018=1.861 (5)|
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