2-Carbethoxymethyl-4H-3,1-benzoxazin-4-one. 4. Reaction with anilines
作者:I. V. Ukrainets、S. G. Taran、O. V. Gorokhova、P. A. Bezuglyi、A. V. Turov
DOI:10.1007/bf01165013
日期:1994.2
US7193080B2
申请人:——
公开号:US7193080B2
公开(公告)日:2007-03-20
Preparation of 4(3H)-quinazolinones from aryldiazonium salt, nitriles and 2-aminobenzoate via a cascade annulation
作者:Mani Ramanathan、Ming-Tsung Hsu、Shiuh-Tzung Liu
DOI:10.1016/j.tet.2018.12.065
日期:2019.2
One-pot synthesis of 3-aryl-4(3H)-quinazolinones has been realized through a cascade annulation. Reaction of aryldiazonium salt with a nitrile provides in situ generation of a reactive nitrilium ion, which is attacked by the amino group of 2-aminobenzoate followed by cyclization to deliver the desired product. This strategy offers a convenient and easy access to a wide range of functionalized quinazolinone