Preparation of 4-arylquinazolines with<i>o</i>-(<i>N</i>-alkyl,<i>N-p</i>-tosyl)aminobenzonitriles, aryllithiums, and NIS
作者:Hiroki Naruto、Hideo Togo
DOI:10.1039/d0ob01223h
日期:——
The treatment of o-(N-alkyl,N-p-tosyl)aminobenzonitriles with aryllithiums, followed by the reaction with water, NIS under irradiation with a fluorescent lamp, and then tBuOK gave 2-alkyl-4-arylquinazolines or 4-arylquinazolines in good to moderate yields. The present reaction proceeds through the formation of N-iodoimines from imines with NIS, the generation of iminyl radicals, the 1,6-H shift by
治疗ø - (ñ -烷基,Np个甲苯磺酰基)与芳基锂aminobenzonitriles,随后与水的反应,NIS用荧光灯照射下,然后吨丁醇钾,得到2-烷基-4- arylquinazolines或4- arylquinazolines在良好至中等的产量。本反应通过与NIS的亚胺形成N-碘亚胺,亚胺基的产生,亚胺基的1,6-H转移,通过6 -exo-tet模式的环化以及最后消除p-来进行。甲苯磺酸盐生成2-烷基-4-芳基喹唑啉或4-芳基喹唑啉。