Silica-bonded N-propylsulfamic acid as a recyclable catalyst for the synthesis of 2,3-dihydroquinazo

来源 :中国化学快报 | 被引量 : 0次 | 上传用户:sumriver
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
2,3-Dihydroquinazolin-4(1H)-one derivatives are synthesized via a one-pot,three component reaction of isatoic anhydride and an aromatic aldehyde with ammonium acetate or primary amine catalyzed by silica-bonded N-propylsulfamic acid(SBNPSA)in refluxing ethanol.
其他文献
The complexity of decoding the standard Reed-Solomon code is a well-known open problem in coding theory. The main problem is to compute the error distance of a
In this article, we give the area formula of the closed projection curve of a closed space curve in Lorentzian 3-space L3. For the 1-parameter closed Lorentzian
By using the index theory for linear bounded self-adjoint operators in a Hilbert space related to a fixed self-adjoint operator A with compact resolvent, the au
Crystal structure and some dynamic performances of Ti0.25V0.34Dy0.01Cr0.1Ni0.3 hydrogen storage electrode alloy have been investigated by XRD,FESEM-EDS,TEM and
With dimethylamine as a template, a new one-dimensional zincophosphite (C2H8N)·[Zn(HPO3)(H2PO3)]was prepared under hydrothermal conditions and characterized by
The author investigated the antioxidant effect of irbesartan[2-butyl-3-({4-[2-(2H-1,2,3,4-tetrazol-5-yl)phenyl]phenyl}methyl)-1,3-diazaspiro[4.4]non-1-en-4-one]
The asymptotic behavior at infinity and an estimate of positive radial solutions of the equation△u+kΣi=1cirliupi=0,x∈Rn,are obtained and the structure of sep
A new series of polyamine-toxic cargo conjugates was synthesized with aryl aldehydes conjugating to hydrazino-containing triamine skeletons.The in vitro cytotox
A sensitive and selective zinc ion ratiometric fluorescence sensor has been synthesized and characterized.This material displays dual fluorescence.After the mat
In the presence of applied magnetic fields H such that |Inε| << H <<1/ε2, the author evaluates the minimal Ginzburg-Landau energy with discontinuous constraint. I