在本研究中,标题化合物 4-(furan-2-ylmethyl)-1-(thiomorpholinomethyl)-[1,2,4]triazolo[4,3 - a ]quinazolin-5( 4H )-one( 1 )合成,其单晶在丙酮中制得。使用1 H NMR、13 C NMR、FT-IR光谱和MS确定其结构。使用X-射线衍射,测量了标题化合物的单晶。同时,采用B3LYP/6-311 G(2d,p)基组,根据DFT计算确定了该小分子的优化分子晶体结构。构象异构体1–3是最稳定的构象,与 X 射线衍射得到的构象一致。Hirshfeld 表面分析和 2D 指纹用于支持由晶体中超分子积累引起的分子间相互作用和接触的定量分析。
在本研究中,标题化合物 4-(furan-2-ylmethyl)-1-(thiomorpholinomethyl)-[1,2,4]triazolo[4,3 - a ]quinazolin-5( 4H )-one( 1 )合成,其单晶在丙酮中制得。使用1 H NMR、13 C NMR、FT-IR光谱和MS确定其结构。使用X-射线衍射,测量了标题化合物的单晶。同时,采用B3LYP/6-311 G(2d,p)基组,根据DFT计算确定了该小分子的优化分子晶体结构。构象异构体1–3是最稳定的构象,与 X 射线衍射得到的构象一致。Hirshfeld 表面分析和 2D 指纹用于支持由晶体中超分子积累引起的分子间相互作用和接触的定量分析。
AbstractA new and efficient synthetic process has been developed for preparation of 2-thioxoquinazolinone and quinazolinobenzothiazinedione derivatives. The related products were synthesized through reaction of isatoic anhydride, amines/anthranilic acids, and carbon disulfide (CS2) in the presence of potassium hydroxide in ethanol at reflux. Graphical abstract
A novel methodology is presented for the synthesis of 3‐substituted 2‐thioxo‐2,3‐dihydroquinazolin‐4(1H)‐one derivatives based on an efficient tandem multicomponent reaction using copper bromide as catalyst. This methodology is based on the multicomponent one‐pot reaction of methyl 2‐bromobenzoate, phenylisothiocyanate derivatives and sodium azide in the presence of copper bromide and l‐proline under
A Convenient and Efficient Synthesis of 2-Thioxoquinazolinone Derivatives via Microwave Irradiation
作者:Weiwei Liu、Qiang Zhang、Feng Gong、Zhiling Cao、Yunfeng Huo
DOI:10.1002/jhet.2036
日期:2015.3
The synthesis of 2‐thioxoquinazolinone derivatives was achieved by condensation of isatoic anhydride, primary amine, and carbon disulfide under microwaveirradiation. This convenient and efficient method affords the desired products with good to excellent yields. Satisfactory infrared spectroscopy, 1H NMR, and high‐resolution mass spectrometry (electrospray ionization) spectra were obtained for all
在微波辐射下,通过等规酸酐,伯胺和二硫化碳的缩合反应,可以合成2-硫代氧杂喹唑啉酮衍生物。这种方便而有效的方法可提供所需的产品,并具有良好或极好的收率。对于上述所有化合物,均获得了令人满意的红外光谱,1 H NMR和高分辨率质谱(电喷雾电离)光谱。
Practical approach to 2-thioxo-2,3-dihydroquinazolin-4(1 H )-one via dithiocarbamate–anthranilic acid reaction
作者:Najmedin Azizi、Mahtab Edrisi
DOI:10.1016/j.cclet.2016.06.012
日期:2017.1
)-one derivatives from dithiocarbamate chemistry. The method involves the reaction of anthranilic acid derivatives (2-aminobenzoic acid, 2-aminobenzamide and isatoic anhydride) with various dithiocarbamate derivatives using ethanol as solvent. The main advantages of this protocol include practical simplicity, good to high yields, and ease of product isolation, purification and cheapness of the solvent
ABSTRACT Green chemistry is one of the most important routes for the synthesis of heterocyclic compounds. In this regard, the synthesis of 2-thioxoquinazolinonederivatives was achieved by condensation of versatile materials including isatoic anhydride, amine and potassium thiocyanate in the green medium of water. This convenient and efficient method affords the desired products with good to excellent yields