Quaternization of N-Heterocycles with Propylene Oxide and Epichlorohydrin
Aleksey Vassilev; Ivanka Dikova; Todor Deligeorgiev; Karl-Heinz Drexhage
Synth. Commun. – 2004, 34 (14), p.2539 – 2547
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http://dx.doi.org/10.1081/SCC-200025601