Visible-light driven regioselective synthesis of 1<i>H</i>-tetrazoles from aldehydes through isocyanide-based [3 + 2] cycloaddition
作者:Fooleswar Verma、Anjumala Sahu、Puneet K. Singh、Ankita Rai、Manorama Singh、Vijai K. Rai
DOI:10.1039/c8gc01321g
日期:——
A novel and green Co@g-C3N4 catalyzed visible light driven direct regioselective synthesis of 1H-tetrazoles directly from various aldehydes and sodium azide is reported. Herein, NaN3 not only behaves as a three-nitrogen donor of the tetrazole ring but also it converts aldehyde into isocyanide as a one-nitrogen source. The regioselectivity of the product, operational simplicity, ambient reaction conditions
报道了新颖的和绿色的Co @ gC 3 N 4催化可见光驱动的直接由各种醛和叠氮化钠直接区域选择性合成1 H-四唑。在此,NaN 3不仅起到四唑环的三氮供体的作用,而且还将醛转化成作为一氮源的异氰酸酯。产品的区域选择性,操作简便,环境反应条件,不使用柱色谱法进行纯化,优异的产品收率(84–95%)和催化剂的可回收性高达五倍,而形态和催化效率没有任何实质性变化是所设想协议的显着特征。
The anchoring of a Cu(<scp>ii</scp>)–salophen complex on magnetic mesoporous cellulose nanofibers: green synthesis and an investigation of its catalytic role in tetrazole reactions through a facile one-pot route
作者:Pouya Ghamari kargar、Ghodsieh Bagherzade
DOI:10.1039/d1ra01913a
日期:——
methods are aimed at carrying out reactions under more efficient conditions and the realization of the twelve principles of green chemistry. Due to the importance and widespread applications of tetrazoles in various industries, especially in the field of pharmaceutical chemistry, and the expansion of the use of nanocatalysts in the preparation of valuable chemical reaction products, we decided to use an
One-Pot Synthesis of Multisubstituted 2-Aminoquinolines from Annulation of 1-Aryl Tetrazoles with Internal Alkynes via Double C–H Activation and Denitrogenation
作者:Lei Zhang、Liyao Zheng、Biao Guo、Ruimao Hua
DOI:10.1021/jo502192b
日期:2014.12.5
An efficient, one-pot synthesis of multisubstituted 2-aminoquinolines from 1-aryl tetrazoles and internal alkynes has been developed. The reaction involves cyclization of 1-aryl tetrazoles with internal alkynes via rhodium(III)-catalyzed double C–H activation and copper(II)-mediated denitrogenation.
Synthetic manifestation of nitro substituted tetrazole-N-(hetero)aryl derivatives and energetic studies
作者:Nagarjuna Kommu、M. Balaraju、Vikas D. Ghule、Akhila K. Sahoo
DOI:10.1039/c6ta10621h
日期:——
substituted tetrazole-N-aryl/heteroaryl derivatives is discussed here. The energetic functional groups –NO2, –NHNO2 and –N3 are reliably inserted into the molecular backbone, making the tetrazole-N-aryl derivatives highly energetic and insensitive to heat and impact. For example, the tetrazole derivatives 7 and 8, bearing a –NO2 or a –NHNO2 group, exhibit energetic properties close to RDX, but with enhanced
Five-membered N-Heterocycles Synthesis Catalyzed by Nano-silica Supported Copper(II)–2-imino-1,2-diphenylethan-1-ol Complex
作者:Hashem Sharghi、Pezhman Shiri、Mahdi Aberi
DOI:10.1007/s10562-017-2173-7
日期:2017.11
30 nm. The catalyst was tested in the N-heterocycles synthesis via C–N bond forming reactions. The catalyst displayed outstanding catalytic activity for all reactions under mild conditions. Finally, the nano heterogeneous copper catalyst is recoverable up to 12 times withoutany significant leaching which indicated that the heterogeneouscatalyst is stable and very active under the applied conditions