Heterocycles p. 3153 - 3158 (1987)
Update date:2022-08-11
Topics:
Wong, Ooi
Tsuzuki, Noriko
Richardson, Mark
Rytting, Howard
Konishi, Ryoji
Higuchi, Takeru
Two 1-alkyl-4-imidazolin-2-ones were prepared by acid-catalysed cyclization of N-(2,2-dialkoxyethyl)-N-alkylureas with improved yields of over 90 percent.The amount of HCl used in the reaction and the proper isolation procedure are the important factors in obtaining the high yields.
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Doi:10.1039/c4ra01858c
(2014)Doi:10.1016/j.tet.2018.11.010
(2019)Doi:10.1021/jo0347821
(2003)Doi:10.1016/j.bmcl.2009.09.102
(2009)Doi:10.1021/jo0107397
(2002)Doi:10.1016/S0040-4039(01)86715-0
(1979)
