Readily available N-substituted amides or their requisite carboxylicacids or acidchlorides have been used to construct 2,3-disubstituted-3H-quinazolin-4-ones in a one-pot procedure. Key transformation in this convergent approach involves Ph3P–I2-mediated formation of amidine upon condensation of an amide or the intermediate amide with methyl anthranilate. Cyclization of the amidine-tethered anthranilate
Abstract Quinazolin-4(3H)-one structures are highly valued in synthetic chemistry due to their incorporation into diverse natural products and drug molecules. Here, we present a new approach for constructing quinazolin-4(3H)-ones utilizing the reactive N-sulfonoketenimines, generated in situ from terminal alkynes and sulfonyl azides and 2-aminobenzamides in the presence of CuI and Et3N. The reaction
摘要 Quinazolin-4(3 H )-one 结构由于能够融入多种天然产物和药物分子中,因此在合成化学中具有很高的价值。在这里,我们提出了一种利用反应性N -磺基烯酮亚胺构建 quinazolin-4(3 H )-one 的新方法,该反应是在 CuI 和 Et 3 N存在下由末端炔烃、磺酰叠氮化物和 2-氨基苯甲酰胺原位生成的。室温下在 MeCN 中顺利进行,以良好的效率提供目标化合物,并且适合克级合成。 图形概要
Rashid, Umer; Ahsanullah; Waseem, Muhammad, Journal of the Chemical Society of Pakistan, 2013, vol. 35, # 3, p. 846 - 858
EL, HASHASH, M. A.;SAYED, M. A., EGYPT. J. CHEM., 1978, 21, N 2, 115-131
作者:EL, HASHASH, M. A.、SAYED, M. A.
DOI:——
日期:——
Method and apparatus for performing micro-scale chemical reactions
申请人:Organ Michael
公开号:US20070212267A1
公开(公告)日:2007-09-13
A reactor apparatus includes at least one reaction capillary having a lumen for receiving a reactant to undergo a reaction, and a magnetron for irradiating reactant contained in at least a portion of the capillary with microwaves. A method of micro-reacting a reactant includes providing a capillary, and irradiating the reactant in the capillary with microwaves to facilitate a chemical reaction in the capillary by which the reactant is converted into a desired product.