Palladium/Copper-Catalyzed Denitrogenative Alkylidenation and<i>ortho</i>-Alkynylation Reaction of 1,2,3-Benzotriazin-4(3<i>H</i>)-ones
作者:Madasamy Hari Balakrishnan、Subramaniyan Mannathan
DOI:10.1021/acs.orglett.9b04297
日期:2020.1.17
3-benzotriazin-4(3H)-ones with aromatic terminal alkynes is described. Furthermore, a denitrogenative ortho-alkynylation reaction of 1,2,3-benzotriazinones with aliphatic terminal alkynes is also developed. The reaction proceeds through a five-membered azapalladacyclic intermediate with the extrusion of a nitrogen molecule. The significance of the reaction is also demonstrated by a one-pot synthesis of (Z)-
一种有效的钯催化方法,可通过1,2,3-的脱氮串联炔基化/环化反应获得各种官能化的(Z)-3-亚苄基-异吲哚啉-1-酮和(Z)-3-亚苄基(亚氨基)异苯并呋喃酮描述了具有芳族末端炔的苯并三嗪-4(3H)-一。此外,还开发了1,2,3-苯并三嗪酮与脂肪族末端炔烃的脱氮邻位炔基反应。该反应通过五元氮杂四环中间体与氮分子的挤出而进行。该反应的重要性还通过一锅法合成高产率至高产率的(Z)-3-亚苄基异苯并呋喃-1(3H)-one衍生物得到了证明。