A “Green” Route to Perylene Dyes: Direct Coupling Reactions of 1,8-Naphthalimide and Related Compounds under Mild Conditions Using a “New” Base Complex Reagent, <i>t</i>-BuOK/DBN
作者:Takaaki Sakamoto、Chyongjin Pac
DOI:10.1021/jo0010835
日期:2001.1.1
The direct coupling reactions of 1,8-naphthalimide compounds efficiently occurred at 130 or 170 degrees C without the intervention of the leuco form dyes in the presence of base complex reagent, t-BuOK/1,5-diazabicyclo[4.3.0]non-5-ene (DBN), to give the corresponding perylene dyes in good yields with > 95% purities. A possible mechanistic speculation for these oxidative coupling reactions is briefly
1,8-萘二甲酰亚胺化合物的直接偶联反应在130或170摄氏度下有效地发生,而在碱性复合试剂t-BuOK / 1,5-二氮杂双环[4.3.0] -5-烯(DBN),以高收率得到纯度> 95%的相应per染料。简要讨论了这些氧化偶联反应的可能机理推测。