Results 41 to 50 of about 17,602 (278)

Crystal structure of rac-(3a'R,9a'R)-3a'-(indol-3-yl)-1′,2′,3′,3a',4′,9a'-hexahydrospiro[cyclopentane-1,9′-pentaleno[1,2-b]indole] p-xylene hemisolvate

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C26H26N2·0.5C8H10, is the first reported characterized 2:2 product from acid-catalyzed condensation of indole with cyclopentanone and no other 2:2 products were observed. Recrystallization from p-xylene gave the title hemisolvate with
Wayland E. Noland, Matthew A. Worth, Andrew K. Schneerer, Courtney L. Paal, Kenneth J. Tritch   +4 more
doaj   +1 more source

A Concise Synthetic Method for Constructing 3-Substituted Piperazine-2-Acetic Acid Esters from 1,2-Diamines

Molecules, 2022
We report a short synthetic route for synthesizing 2,3-substituted piperazine acetic acid esters. Optically pure amino acids were efficiently converted into 1,2-diamines that could be utilized to deliver the title 2,3-substituted piperazines in five ...
Srinivas Chamakuri, Sunny Ann Tang, Kevin A. Tran, Shiva Krishna Reddy Guduru, Peter K. Bolin, Kevin R. MacKenzie, Damian W. Young   +6 more
doaj   +1 more source

Access to Indenones by Rhodium(III)-Catalyzed C-H Annulation of Arylnitrones with Internal Alkynes

, 2013
Under redox-neutral conditions, rhodium(III)-catalyzed C-H annulation of N-tert-butyl-alpha-arylnitrones with internal alkynes has been realized for the synthesis of indenones under mild conditions.
李兴伟, Wang, Mei, Qi, Zisong, Li, Xingwei   +3 more
core   +1 more source

An Update of Transition Metal-Catalyzed Decarboxylative Transformations of Cyclic Carbonates and Carbamates

Molecules, 2019
Functionalized cyclic organic carbonates and carbamates are frequently used in a number of transition metal-catalyzed decarboxylative reactions for the construction of interesting molecules.
Linhong Zuo, Teng Liu, Xiaowei Chang, Wusheng Guo   +3 more
doaj   +1 more source

On‐Water Surface Synthesis of 2D Conjugated Metal–Organic Framework Films With Controllable Layer Orientation Enabling High‐Performance Chemiresistive Sensing

Advanced Materials, EarlyView.
Layer orientation dictates charge transport in 2D conjugated metal–organic frameworks, yet controllable methods remain scarce. We report surfactant monolayer‐assisted on‐water synthesis of cm2‐scale Ni‐HHTP films with programmable face‐on and edge‐on orientations.
Jianjun Zhang, Víctor García‐López, Yutong Wu, Shuai Fu, Yucong Chen, Arsh S. Hazrah, Petko Petkov, Mike Hambsch, Feng Ni, Alina Müller, Ye Yang, Leif Riemenschneider, Shirong Huang, Albertus Mattheüs Sandee, Yilv Guo, David Silva‐Brea, Jan‐Ole Joswig, Stefan C. B. Mannsfeld, Thomas Heine, Gianaurelio Cuniberti, Mischa Bonn, Zhiyong Wang, Xinliang Feng   +22 more
wiley   +1 more source

Isosteric Substitution Enables Rational Design of Two‐Dimensional Energetic Crystals

Advanced Science, EarlyView.
Isosteric substitution transforms a classical nitro–amine motif into two‐dimensional aminofurazans with performance beyond TATB. ABSTRACT Two‐dimensional (2D) energetic crystals dissipate mechanical insult via interlayer slip, yet their molecular design space remains narrow.
Linyuan Wen, Wentong Tu, Tao Yu, Chao Chen, Zhixiang Zhang, Zhixiang Xie, Yingzhe Liu   +6 more
wiley   +1 more source

Copper-promoted hydration and annulation of 2-fluorophenylacetylene derivatives: from alkynes to benzo[b]furans and benzo[b]thiophenes

Beilstein Journal of Organic Chemistry, 2014
An efficient copper-promoted hydration reaction and its application in the synthesis of benzo[b]furan and benzo[b]thiophene derivatives is presented starting from readily available 2-fluorophenylacetylene derivatives. The key annulation step involves the
Yibiao Li, Liang Cheng, Xiaohang Liu, Bin Li, Ning Sun   +4 more
doaj   +1 more source

Total Synthesis of 6-Deoxydihydrokalafungin, a Key Biosynthetic Precursor of Actinorhodin, and Its Epimer

Molecules, 2021
In this article, we report the total synthesis of 6-deoxydihydrokalafungin (DDHK), a key biosynthetic intermediate of a dimeric benzoisochromanequinone antibiotic, actinorhodin (ACT), and its epimer, epi-DDHK.
Takuya Kumamoto, Mika Kainuma, Azusa Takahashi, Yoshika Matsuo, Kazuaki Katakawa, Takaaki Taguchi, Koji Ichinose   +6 more
doaj   +1 more source

Aromaticity‐Engineered Open‐Shell Radical Anions for Air‐Stable Doublet Emission in N‐Annulated Perylene Diimide

Advanced Science, EarlyView.
Open‐shell type radical anions with stable doublet emission have been synthesized that feature aromaticity engineering, through‐space charge‐transfer (TSCT), and electro(fluoro)chromism. ABSTRACT We report the doublet emissive open‐shell radical anions, where the N‐annulated perylene diimide (PDIN–H) is functionalized with aromatic rings.
Jeongyoon Kim, Soyoon Lee, Min‐Ji Kim, Mina Ahn, Kyung‐Ryang Wee   +4 more
wiley   +1 more source

Electrophilically Activated Nitroalkanes in Double Annulation of [1,2,4]Triazolo[4,3-a]quinolines and 1,3,4-Oxadiazole Rings

Molecules, 2021
Nitroalkanes activated with polyphosphoric acid could serve as efficient electrophiles in reactions with amines and hydrazines, enabling various cascade transformations toward heterocyclic systems.
Alexander V. Aksenov, Nikita K. Kirilov, Nicolai A. Aksenov, Dmitrii A. Aksenov, Elena A. Sorokina, Carolyn Lower, Michael Rubin   +6 more
doaj   +1 more source