作者:Etsuko Kawashima、Katsumi Tabei
DOI:10.1002/jhet.5570230610
日期:1986.11
Reaction of benzamide oxime (1) with N, N′-dicyclohexylcarbodiimide (2) afforded 5-cyclohexylamino-3-phenyl-1,2,4-oxadiazole (3), N, N′, N″-tricyclohexylguanidine (4) and N, N′-dicyclohexyl urea (5). When acetone (8a) or ethyl acetoacetate (8b) was added as a trap, the yield of 3 increased slightly and N-(2-propylidene)cyclohexylamine (9a) or ethyl 3-cyclohexylamino-2-butenoate (9b) was obtained as
苯甲酰胺肟(1)与N,N'-二环己基碳二亚胺(2)反应,得到5-环己基氨基-3-苯基-1,2,4-恶二唑(3),N,N ',N '' -三环己基胍(4)和N,N′-二环己基脲(5)。当添加丙酮(8a)或乙酰乙酸乙酯(8b)作为捕集阱时,产率3略有提高,并获得N-(2-亚丙基)环己胺(9a)或3-环己基氨基-2-丁烯酸乙酯(9b),以及产品4和5。乙酰丙酮(8c)和二乙酰(8d)也用作环己基氨基的捕集剂。当添加对甲苯磺酸作为催化剂时,以低收率获得了1-环己基-5-环己基氨基-3-苯基-1 H -1,2,4-三唑(11)。