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。