Results 21 to 30 of about 157,130 (323)

Isolation of bis(copper) key intermediates in Cu-catalyzed azide-alkyne "click reaction". [PDF]

, 2015
The copper-catalyzed 1,3-dipolar cycloaddition of an azide to a terminal alkyne (CuAAC) is one of the most popular chemical transformations, with applications ranging from material to life sciences.
Bertrand, Guy, Jin, Liqun, Melaimi, Mohand, Tolentino, Daniel R   +3 more
core   +2 more sources

Organocatalysis with carbon nitrides

Science and Technology of Advanced Materials, 2023
Carbon nitrides, a distinguished class of metal-free catalytic materials, have presented a good potential for chemical transformations and are expected to become prominent materials for organocatalysis.
Sujanya Maria Ruban, Kavitha Ramadass, Gurwinder Singh, Siddulu Naidu Talapaneni, Gunda Kamalakar, Chandrakanth Rajanna Gadipelly, Lakshmi Kantham Mannepalli, Yoshihiro Sugi, Ajayan Vinu   +8 more
doaj   +1 more source

An overview of the cycloaddition chemistry of fulvenes and emerging applications

Beilstein Journal of Organic Chemistry, 2019
The unusual electronic properties and unique reactivity of fulvenes have interested researchers for over a century. The propensity to form dipolar structures at relatively low temperatures and to participate as various components in cycloaddition ...
Ellen Swan, Kirsten Platts, Anton Blencowe   +2 more
doaj   +1 more source

Donor-Acceptor Substituted Benzo-, Naphtho- and Phenanthro-Fused Norbornadienes

Molecules, 2020
The photochromic norbornadiene/quadricyclane (NBD/QC) couple has found interest as a molecular solar thermal energy (MOST) system for storage of solar energy.
Mads Mansø, Lorette Fernandez, Zhihang Wang, Kasper Moth-Poulsen, Mogens Brøndsted Nielsen   +4 more
doaj   +1 more source

Synthesis of Functionalized Diethyl(pyrrolidin-2-yl)phosphonate and Diethyl(5-oxopyrrolidin-2-yl)phosphonate

Molecules, 2021
Short and efficient syntheses of functionalized (pyrrolidin-2-yl)phosphonate and (5-oxopyrrolidin-2-yl)phosphonate have been developed. The synthetic strategy involved the diastereospecific 1,3-dipolar cycloaddition of N-benzyl-C-(diethoxyphosphoryl ...
Iwona E. Głowacka, Anna Hartwich, Iwona Rozpara, Dorota G. Piotrowska   +3 more
doaj   +1 more source

Key Mechanistic Features in Palladium-Catalyzed Methylcyclopropanation of Norbornenes With Vinyl Bromides: Insights From DFT Calculations

Frontiers in Chemistry, 2019
DFT calculations were performed to elucidate mechanistic details of an unusual palladium-catalyzed methylcyclopropanation from [2 + 1] cycloadditions of (Z)-2-bromovinylbenzene and endo-N-(p-tolyl)-norbornenesuccinimide.
Fang Ying, Fang Ying, Yutong Zhang, Chuyue Xiang, Zhijun Song, Hujun Xie, Weiliang Bao   +6 more
doaj   +1 more source

Synthesis of 5,6-Dihydropyrazolo[5,1-a]isoquinolines through Tandem Reaction of C,N-Cyclic Azomethine Imines with α,β-Unsaturated Ketones

Molecules, 2023
An innovative and efficient approach has been developed for the synthesis of 5,6-dihydropyrazolo[5,1-a]isoquinolines. This one-pot tandem reaction involves the reaction of C,N-cyclic azomethine imines with α,β-unsaturated ketones, using K2CO3 as the base
Young Jae Yun, Sung-Gon Kim
doaj   +1 more source

Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]

, 2017
Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E, Hudson, Brandi M, Romo, Daniel, Tantillo, Dean J   +3 more
core   +2 more sources

Synthesis and the Biological Activity of Phosphonylated 1,2,3-Triazolenaphthalimide Conjugates

Molecules, 2016
A novel series of diethyl {4-[(5-substituted-1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)-methyl]-1H-1,2,3-triazol-1-yl}alkylphosphonates designed as analogues of amonafide was synthesized.
Iwona E. Głowacka, Rafał Gulej, Piotr Grzonkowski, Graciela Andrei, Dominique Schols, Robert Snoeck, Dorota G. Piotrowska   +6 more
doaj   +1 more source

Cycloaddition of 4-Acyl-1H-pyrrole-2,3-diones Fused at [e]-Side and Cyanamides: Divergent Approach to 4H-1,3-Oxazines

Molecules, 2022
4-Acyl-1H-pyrrole-2,3-diones fused at [e]-side with a heterocyclic moiety are suitable platforms for the development of a hetero-Diels–Alder-reaction-based, diversity-oriented approaches to series of skeletally diverse heterocycles.
Ekaterina E. Khramtsova, Aleksandr D. Krainov, Maksim V. Dmitriev, Andrey N. Maslivets   +3 more
doaj   +1 more source