Results 51 to 60 of about 6,842 (226)

Aminomethylation/hydrogenolysis as an alternative to direct methylation of metalated isoquinolines – a novel total synthesis of the alkaloid 7-hydroxy-6-methoxy-1-methylisoquinoline

Beilstein Journal of Organic Chemistry, 2018
Highly-substituted isoquinolines are important scaffolds in syntheses of natural products and in drug development and hence, effective synthetic approaches are required.
Benedikt C. Melzer, Jan G. Felber, Franz Bracher   +2 more
doaj   +1 more source

Mechanically Adaptive Polyimide Interfaces for Stable High‐Voltage NCM–Sulfide All‐Solid‐State Batteries

Advanced Science, EarlyView.
A mechanically adaptive polyimide interface dynamically stabilizes single‐crystal cathodes in sulfide all‐solid‐state batteries. By integrating robust chemical coordination with viscoelastic compliance, this smart coating suppresses parasitic reactions and accommodates cyclic volume expansion.
Jiatao Wu, Wenjin Li, Rui Wang, Peng Wang, Kaiyuan Deng, Chengshuai Chang, Chuan Xie, Lei Yao, Guangliang Gary Liu   +8 more
wiley   +1 more source

Atroposelective Access to π‐Conjugated 1,2‐Azaborepines Enabled by Palladium‐Catalyzed Cyclization of N‐Heterobiaryls with Alkynylboronates

Advanced Science, EarlyView.
We report a palladium‐catalyzed atroposelective cyclization of N‐heterobiaryl triflates with alkynyl boronates to access seven‐membered 1,2‐BN‐bridged biaryls with high yields and excellent enantioselectivity via a cascade DyKAT, cis‐carbopalladation, and 1,2‐migration, which expands the toolbox for axially chiral π‐conjugated boron compounds and opens
Fengya He, Zhen Wang, Haoyu Guo, Shuguang Chen, Xu Zhang, Yongjia Shang, Hui Wang   +6 more
wiley   +1 more source

Asymmetric synthesis of tetrazole and dihydroisoquinoline derivatives by isocyanide-based multicomponent reactions

Nature Communications, 2019
Asymmetric isocyanide-based multicomponent reactions are elegant, yet challenging, strategies to access valuable N-heterocycles. Here, the authors employ a chiral Mg(II) -N,N′-dioxide catalyst in three- or four-component reactions to obtain chiral ...
Qian Xiong, Shunxi Dong, Yushuang Chen, Xiaohua Liu, Xiaoming Feng   +4 more
doaj   +1 more source

Rhodium-Catalyzed Oxidative Annulation of 2- or 7-Arylindoles with Alkenes/Alkynes Using Molecular Oxygen as the Sole Oxidant Enabled by Quaternary Ammonium Salt

Molecules, 2021
Developing an efficient catalytic system using molecular oxygen as the oxidant for rhodium-catalyzed cross-dehydrogenative coupling remains highly desirable.
Weihui Zhuang, Jiaqi Zhang, Yanping Zheng, Qiufeng Huang   +3 more
doaj   +1 more source

Spasmolytic Activity of 1,3-Disubstituted 3,4-Dihydroisoquinolines

Biomedicines
This article concerns the spasmolytic activities of some novel 1,3-disubstituted 3,4-dihydroisoquinolines. These compounds can be evaluated as potential therapeutic candidates according to Lipinski’s rule of five, showing high gastrointestinal absorption
Miglena Milusheva, Mihaela Stoyanova, Vera Gledacheva, Iliyana Stefanova, Mina Todorova, Stoyanka Nikolova   +5 more
doaj   +1 more source

Synthesis of pyrrolidinedione-fused hexahydropyrrolo[2,1-a]isoquinolines via three-component [3 + 2] cycloaddition followed by one-pot N-allylation and intramolecular Heck reactions

Beilstein Journal of Organic Chemistry, 2020
Two kinds of [3 + 2] cycloaddition intermediates generated from the three-component reactions of 2-bromobenzaldehydes and maleimides with amino esters or amino acids were used for a one-pot N-allylation and intramolecular Heck reactions to form ...
Xiaoming Ma, Suzhi Meng, Xiaofeng Zhang, Qiang Zhang, Shenghu Yan, Yue Zhang, Wei Zhang   +6 more
doaj   +1 more source

Benzo[de]naphtho[1,8-gh]quinolines: synthesis, photophysical studies and nitro explosives detection

Chimica Techno Acta, 2021
A rational synthetic approach to substituted naphtho[1,8-gh]quinolines using intramolecular cyclization in the presence of potassium in the series of (naphthalen-1-yl)isoquinolines is described. The photophysical properties of the obtained compounds were
Igor L. Nikonov, Igor A. Khalymbadzha, Leila К. Sadieva, Maria I. Savchuk, Ekaterina S. Starnovskaya, Dmitry S. Kopchuk, Igor S. Коvalev, Grigory А. Kim, Oleg N. Chupakhin   +8 more
doaj   +1 more source

Synthesis of Pyrrolo-isoquinolines Related to the Lamellarins Using Silver-Catalyzed Cycloisomerization/Dipolar Cycloaddition

, 2016
Synthesis of pyrrolo-isoquinolines related to the lamellarin alkaloids employing silver-catalyzed cycloisomerization−dipolar cycloaddition of alkynyl N-benzylidene glycinates is described.
John A. Porco (1307085), Shun Su (1341414)   +1 more
core   +4 more sources

Synthesis of 2-trifluoromethylpyrazolo[5,1-a]isoquinolines via silver triflate-catalyzed or electrophile-mediated one-pot tandem reaction

Beilstein Journal of Organic Chemistry, 2014
An efficient one-pot tandem cyclization/[3 + 2] cycloaddition reaction of N’-(2-alkynylbenzylidene)hydrazides with ethyl 4,4,4-trifluorobut-2-ynoate under silver triflate-catalyzed or electrophile-mediated conditions is described.
Xiaoli Zhou, Meiling Liu, Puying Luo, Yingjun Lai, Tangtao Yang, Qiuping Ding   +5 more
doaj   +1 more source