... Chem. SOC., 50, 3311 (1928). (5) These authors commented, “It is stated in almost all the standard textbooks of organic chemistry that amidines ... [J. Chem. ... Microanalyses were carried out under the direction of Dr. J. A. Kuck. NH4X RCK + R'OH e RC(KH)OR' +RC(NH)NHz.HX ...