A Versatile Synthesis of Novel<i>N</i>,<i>N</i>,<i>N</i>″-Trisubstituted Guanidines
作者:C. R. Rasmussen、F. J. Villani, Jr.、B. E. Reynolds、J. N. Plampin、A. R. Hood、L. R. Hecker、S. O. Nortey、A. Hanslin、M. J. Costanzo、R. M. Howse, Jr.、A. J. Molinari
DOI:10.1055/s-1988-27606
日期:——
N,N,N″-Trisubstituted guanidines (most of them N″-aryl-N-azacycloalkanecarboximidamides) are prepared in generally good yields by S-methylation of monosubstituted thioureas with methyl iodide in methanol or acetone and reaction of the resultant methyl carbamimidothioate hydroiodides with secondary amines in boiling tert-butyl alcohol or acetonitrile.
N,N,N″-三取代
胍(大部分是N″-芳基-N-氮杂环烷羧基
亚胺)通常以良好的产率通过以下步骤制备:将单取代
硫脲与甲基
碘在
甲醇或
丙酮中进行S-甲基化反应,然后将所得的甲基
氨基甲
亚胺硫醇
氢碘酸盐与二级胺在沸腾的
叔丁醇或
丙酮腈中反应。