6-Hydroxyaurone aminomethyl derivatives in the inverse electron-demand Diels–Alder reaction
作者:Antonina V. Popova、Galyna P. Mrug、Svitlana P. Bondarenko、Mikhaylo S. Frasinyuk
DOI:10.1007/s10593-019-02598-z
日期:2019.12
2-benzylidene derivatives of difuro[2,3-b:2',3'-f]chromen-3(2H)-one, furo[2,3-f]pyrano[2,3-b]chromen-3(2H)-one, difuro[2,3-b:3',2'-g]chromen-3(2H)-one, and furo[3,2-g]pyrano[2,3-b]chromen-3(2H)-one heterocyclic systems were synthesized. A similar reaction with cyclic enamines, accompanied by subsequent transformation of hemi-aminals, led to the formation of partially hydrogenated derivatives of furo[2
研究了逆电子需求异Diels-Alder反应中7-二甲基氨基甲基-6-羟基金酮和5-二甲基氨基甲基-6-羟基-7-甲基酮的转化。由于含有苯并呋喃酮部分的邻醌甲基化物的原位热形成和环状乙烯基酯的环加成反应,双呋喃[2,3- b:2',3'- f ] chromen-3(2)的2-亚苄基衍生物H)-一,呋喃[2,3- f ]吡喃并[2,3- b ] chromen -3(2 H)-一,呋喃[2,3- b:3',2'- g ] chromen-3 (2 H)-一和呋喃[3,2- g ]吡喃[2,3- b合成了] chromen-3(2 H)-杂环系统。与环状烯胺的类似反应,伴随着半缩醛的后续转化,导致呋喃[2,3- a ]黄原胶-3(2 H)-one和呋喃[3,2- b ]的部分氢化衍生物的形成] xanthen-3(2 H)-1 。