Oxa-[3+3] annulation of 1H-benzo[f]chromene-2-carbaldehydes and 2-naphthols: synthesis of 7aH,15H-benzo[f]benzo[5,6]chromeno[2,3-b]chromenes
作者:Irina А. Semenova、Vitaly А. Osyanin、Dmitry V. Osipov、Yuri N. Klimochkin
DOI:10.1007/s10593-021-02968-6
日期:2021.6
A method for the preparation of polycondensed chromeno[2,3-b]chromenes was developed based on the formal [3+3] cycloaddition reaction between 1H-benzo[f]chromene-2-carbaldehydes and 2-naphthols. In the case of resorcinol, the bisannulation product formed with the participation of both hydroxy groups was isolated.
基于1H-苯并[ f ]色烯-2-甲醛和2-萘酚之间的正式[3+3]环加成反应,开发了一种制备缩聚色烯[2,3- b ]色烯的方法。在间苯二酚的情况下,分离出两个羟基参与形成的双环化产物。
SELVARAJ, S.;SANJEEVI, BABU, K. G.;BALASUBRAMANIAN, K. K.;RAJAGOPALAN, K., TETRAHEDRON LETT., 1983, 24, N 24, 2509-2512
作者:SELVARAJ, S.、SANJEEVI, BABU, K. G.、BALASUBRAMANIAN, K. K.、RAJAGOPALAN, K.