Lewis acid free synthesis of 3,4-dihydro-1H-indazolo[1,2-b]phthalazine-1,6,11(2H,13H)-triones promoted by 1,1,1,3,3,3-hexafluoro-2-propanol
作者:Behrooz Maleki、Samaneh Sedigh Ashrafi、Reza Tayebee
DOI:10.1039/c4ra06768a
日期:——
A convenient, environmentally friendly and efficient procedure for the synthesis 3,4-dihydro-1H-indazolo[1,2-b]phthalazine-1,6,11(2H,13H)-trione derivatives has been developed via multi-component and one-pot reactions of various aldehydes with cyclic 1,3-diketones and phthalhydrazide 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP). In simple and mild reaction conditions, the use of HFIP is explored as an easy workup and a green catalyst for the one-pot three-component synthesis of 3,4-dihydro-1H-indazolo[1,2-b]phthalazine-1,6,11(2H,13H)-triones. Thus, this practical method is developed as a notable medium for these derivatives via a multicomponent reaction.
通过各种醛与环状 1,3-二酮和酞酰肼 1,1,1,3,3,3-六氟-2-丙醇(HFIP)的多组分和一锅反应,开发了一种方便、环保和高效的 3,4-二氢-1H-吲唑并[1,2-b]酞嗪-1,6,11(2H,13H)-三酮衍生物的合成方法。在简单温和的反应条件下,研究人员探索了如何利用 HFIP 作为一种易于操作的绿色催化剂,一锅三组分合成 3,4- 二氢-1H-吲唑并[1,2-b]酞嗪-1,6,11(2H,13H)-三酮。因此,这种实用的方法被开发为通过多组分反应合成这些衍生物的显著介质。