Synthesis of 1-(<i>N</i>-arylaminomethyl)-3-methyl-1,8-dihydrocycloheptapyrazol-8-ones
作者:Ming-Zhu Piao、Dao-Lin Wang、Du-Ren Lu、Kimiaki Imafuku
DOI:10.1002/jhet.5570300512
日期:1993.10
Reactions of 3-methyl-1,8-dihydrocycloheptapyrazol-8-one (2) with arylamines in the presence of formaldehyde gave 1-(N-arylaminomethyl)-3-methyl-1,8-dihydrocycloheptapyrazol-8-ones 5a-l in good yields. 1,3,5-Tris(phenyl- and 4-methoxyphenyl)hexahydro-1,3,5-triazines or bis(3-nitroanilino)methane, which were condensation products of arylamines and formaldehyde, also reacted with compound 2 to afford
3-甲基-1,8-二氢环庚唑-8-(2)与芳胺在甲醛存在下的反应得到1-(N-芳基氨基甲基)-3-甲基-1,8-二氢环庚唑-8-酮5a-1丰产。1,3,5-三(苯基-和4-甲氧基苯基)六氢-1,3,5-三嗪或双(3-硝基苯胺基)甲烷是芳胺和甲醛的缩合产物,也与化合物2反应得到5a ,c,j。