STUDIES ON QUINAZOLINES 7*. ALKYLATION OF 2-ARYL-4,4-DIPHENYL-3,4-DIHYDROQUINAZOLINES WITH METHYL IODIDE
DOI:
https://doi.org/10.1007/4605Keywords:
1, 3-dimethyl-4, 4-diphenyl-1, 4-dihydroquinazolin-3-ium iodides, 1-methyl-4, 4-dihydroquinazolines, methyl iodide, alkylation.Abstract
The reaction of 2-aryl-4,4-diphenyl-3,4-dihydroquinazoline with methyl iodide in acetone in the presence of potassium hydroxide at 40°C leads to the formation of the corresponding 1-methyl-4,4-diphenyl-1,4-dihydroquinazolines and 1,3-dimethyl-4,4-diphenyl-1,4-dihydroquinazolin-3-ium iodides. The structure of 2-(7-methoxy-1,3-benzodioxol-5-yl)-1-methyl-4,4-diphenyl-1,4-dihydroquinazoline was established by heteronuclear correlation NMR spectroscopy.