Tetrahedron Letters p. 959 - 960 (1988)
Update date:2022-08-17
Topics:
Jurczak, Janusz
Ostaszewski, Ryszard
The application of ultrasound to N-methylation of variety of diazacoronands by methyl iodide under phase transfer conditions leads to N,N'-dimethyl diazacoronands in almost quantitative yields.
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