A fast, efficient, and green synthesis of pyrimido[4,5-d]pyrimidinederivatives has been achieved via one-potthree-component reaction starting from 6-amino-N,N-dimethyluracil, phenylisothiocyanate or phenylisocyanate, and aromatic aldehydes in the presence of polyethylene glycol-bound sulfonic acid as a catalyst in water as solvent.
通过一锅三组分反应,从6-氨基-N,N-二甲基尿嘧啶,苯基异硫氰酸酯或苯基异氰酸酯和芳族醛开始,可以 快速,高效且绿色地合成嘧啶并[4,5- d ]嘧啶衍生物。存在于水中的聚乙二醇键合磺酸作为催化剂。
MIL-53(Fe): Introduction of a new catalyst for the synthesis of Pyrimido[4,5-d]pyrimidine derivatives under solvent-free conditions
作者:Mohammad Hossein Abdollahi-Basir、Farhad Shirini、Hassan Tajik、Mohammad Ali Ghasemzadeh
DOI:10.1016/j.molstruc.2019.07.065
日期:2019.12
form pyrimido[4,5-d]pyrimidinederivatives is investigated. Using this method all reactions are performed at 110 °C under solvent-free conditions with good to excellent product yields during acceptable reaction times. The other important merit of this method is simple recovery of MIL-53(Fe) through filtration which makes it reusable for further cycles without considerable decrease in its activity. The
An efficient and regioselective one-pot multi-component synthesis of pyrimido[4,5-d]pyrimidine derivatives in water
作者:Swarup Majumder、Pallabi Borah、Pulak J. Bhuyan
DOI:10.1016/j.tetlet.2013.12.095
日期:2014.2
Pyrimido[4,5-d]pyrimidine derivatives 4 have been prepared in an efficient and regioselective manner in water via multi-component reaction of isothiocyanate 1, aromatic aldehyde 2, N,N-dimethyl-6-amino uracil 3 in the presence of p-toluenesulfonic acid (p-TSA) as a Lewis acid catalyst.
在水中存在下,通过异硫氰酸酯1,芳香醛2,N,N-二甲基-6-氨基尿嘧啶3的多组分反应,以高效且区域选择性的方式制备了嘧啶并[4,5- d ]嘧啶衍生物4。对-甲苯磺酸(p- TSA)作为路易斯酸催化剂。