Efficient synthesis of mono- and disubstituted 2,3-dihydroquinazolin-4(1H)-ones using aluminum methanesulfonate as a reusable catalyst
作者:Zhiguo Song、Lianli Liu、Yang Wang、Xiaohu Sun
DOI:10.1007/s11164-011-0445-1
日期:2012.3
A wide range of mono- and disubstituted 2,3-dihydroquinazolin-4(1 H )-ones were synthesized via a one-pot three components condensation of isatoic anhydride, aldehydes, and ammonium salts or primary amines in the presence of aluminum methanesulfonate in EtOH/H2O solution. The catalyst is reusable and could be recycled for several runs without any distinct decrease in its efficiency. A plausible mechanism
在甲磺酸铝的存在下,通过一锅三组分的ISA酸酐,醛,铵盐或伯胺的缩合反应合成了广泛的单和二取代的2,3-二氢喹唑啉-4(1 H )-。 EtOH / H 2 O溶液。该催化剂是可重复使用的,并且可以循环使用几次,而不会明显降低其效率。提出了这种一锅三组分反应的合理机制。
Dihydroquinazolin-4(1H)-one derivatives as novel and potential leads for diabetic management
作者:Oluwatoyin Babatunde、Shehryar Hameed、Uzma Salar、Sridevi Chigurupati、Abdul Wadood、Ashfaq Ur Rehman、Vijayan Venugopal、Khalid Mohammed Khan、Muhammad Taha、Shahnaz Perveen
DOI:10.1007/s11030-021-10196-5
日期:2022.4
A variety of dihydroquinazolin-4(1H)-onederivatives (1–37) were synthesized via “one-pot” three-component reaction scheme by treating aniline and different aromatic aldehydes with isatoic anhydride in the presence of acetic acid. Chemical structures of compounds were deduced by different spectroscopic techniques including EI-MS, HREI-MS, 1H-, and 13C-NMR. Compounds were subjected to α-amylase and
Brønsted acidic ionic liquids catalyze the preparation of 2,3-dihydroquinazolin-4(1H)-one derivatives
作者:Hamid Reza Shaterian、Morteza Aghakhanizadeh
DOI:10.1007/s11164-013-1071-x
日期:2014.4
A simple and facile method for the green synthesis of 2,3-dihydroquinazolin-4(1 H )-one derivatives by direct three-component cyclo-condensation of isatoic anhydride, ammoniumacetate (or primary amines), and arylaldehydes using different Brønsted acidic ionic liquids, for example 2-pyrrolidonium hydrogensulfate ([hnmp][HSO4]), N -methyl-2-pyrrolidonium hydrogensulfate ([NMP][HSO4]), and N -methyl-2-pyrrolidonium
一种简单易行的方法,可通过使用不同的布朗斯台德酸性分子直接对三酸酐,乙酸铵(或伯胺)和芳醛进行直接三组分环缩合,绿色合成2,3-二氢喹唑啉-4(1 H )-one衍生物离子液体,例如2-吡咯烷硫酸氢盐([hnmp] [HSO 4 ]), N- 甲基-2-吡咯烷硫酸氢盐([NMP] [HSO 4 ])和 N- 甲基-2-吡咯烷鎓磷酸二氢盐([NMP]描述了[H 2 PO 4 ])作为在无溶剂条件下的可重复使用的催化剂。此外,邻氨基苯甲酰胺与芳醛的反应可合成2,3-二氢喹唑啉-4(1 H )-研究了一种衍生物。
Benzene-1,3,5-tricarboxylic acid-functionalized MCM-41 as a novel and recoverable hybrid catalyst for expeditious and efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones via one-pot three-component reaction
作者:Niusha Nikooei、Mohammad G. Dekamin、Ehsan Valiey
DOI:10.1007/s11164-020-04179-8
日期:2020.8
and efficient synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives, as an important pharmaceutical scaffold, in aqueous media via a three-componentone-potcondensation of isatoic anhydride and aromatic aldehydes with primary amines or ammonium salts. This method has several advantages such as low catalyst loading, high to excellent yields, short reaction times, working under green conditions and
Dabco containing acidic poly(ionic liquid): An efficient catalyst for the one-pot Preparation of 2,3-dihydroquinazoline-4(1H)-ones
作者:M. K. Mohammadi、S. J. Saghanezhad、N. Razzaghi-asl
DOI:10.4314/bcse.v31i3.17
日期:——
1,4-Diazabicyclo[2.2.2]octane (DABCO) containing acidic poly(ionic liquid) (DAIL) has been prepared via condensation of 1,4-dichloro butane and DABCO, as an efficient acidic catalyst and has been applied in the one-pot preparation of 2,3-dihydroquinazolin-4(1H)-one derivatives. This catalyst has been characterized by FT-IR and TGA. According to the obtained results including time, yield and recyclability, DAIL could be considered as an efficient catalyst for organic transformations.