Results 51 to 60 of about 214,608 (288)

SYNTHESIS OF BICYCLIC PYRAZINONES VIA ADDITION OF HETEROCYCLIC AMINES TO A NITRO-ALKENE

, 1994
Michael addition of heterocyclic amines (6), (10), (13) and (17) to nitro-olefin (3) followed by reduction/cyclization of the nitro group of the adduct provides a convenient synthesis of the bicyclic pyrazinones (8), (12), (16), (19) and (20) which are ...
Johnson, AD, Margaret A. Brimble, Andrew D. Johnston, Brimble, MA   +3 more
core   +1 more source

A DFT Model Reaction and a Procedure for Predicting the Nucleofugality of Tertiary Heterocyclic Amines [PDF]

, 2022
A previously described procedure for estimating the nucleofugality of substituted pyridines in terms of Nfcalc parameters has now been applied to various tertiary heterocyclic amines.
Matić, Mirela, Denegri, Bernard
core   +1 more source

Tailoring Structure–Property Relationships in π‐Conjugated Heterocyclic Poly(arylene alkylene) Anion‐Exchange Membranes for High‐Performance Water Electrolysis

Advanced Science, EarlyView.
From passive to active ion transport: π‐conjugated heterocycles reconfigure the hydration environment and microphase morphology of p‐terphenyl‐based anion‐exchange membranes, enabling fast hydroxide transport and high‐performance water electrolysis. ABSTRACT Anion‐exchange membrane water electrolysis (AEMWE) is a promising technology for sustainable ...
Qian Wang, Riyang Huang, Wenzhe Zhao, Si Chen, Yunpeng Guo, Yang Wu, Yun Zhao, Patric Jannasch, Jingshuai Yang   +8 more
wiley   +1 more source

SYNTHESIS AND CHARACTERIZATION OF NOVEL 1,3-OXAZEPANE DERIVATIVES VIA REACTION OF PHENYI SUCCINIC ANHYDRIDE WITH SCHHIF'S BASES [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2014
Novel 1,3-oxazepane-4,7-dione derivatives were synthesized by the reaction of phenyl succinic anhydride with Schiff‘s bases in anhydrous benzen with high yields.
Amaadh F. Nassar, Obaid H.Abid
doaj   +1 more source

Chemical analysis of heterocyclic aromatic amines: the results of two European projects compared

, 1998
This report describes two studies which compared the results of the analyses of four heterocyclic aromatic amines (HAAs): 2-amino-3-methylinidazo[4,5-f] quinoline (IQ); 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx); 2-amino-3,4,8-trimethylimidazo[
De Meester, Conrad, Workshop on Heterocyclic Aromatic Amines   +1 more
core   +1 more source

Phosphor‐Sensitized Ternary Organic Solar Cells Achieving 18.6% PCE via Ir(III)‐Mediated Triplet Energy Transfer and Non‐Radiative Recombination Suppression

Advanced Science, EarlyView.
A synergistic phosphor‐sensitization strategy (PSS) significantly enhances ternary OSCs performance. By integrating an Ir‐3 complex as a triplet energy mediator within a pyrazine‐based (N2) ternary blend (PM6:N2: L8‐BO) doped with 1 wt.% of Ir‐3 complex, and a PCE of 18.6% is achieved through efficient triplet‐triplet energy transfer (TTET), suppressed
Priyanka Yadav, Guohong Liu, Hyerin Kim, Songhyun Kim, Minsung Kim, Yeongbin Ma, Jisan Lim, Young Yong Kim, Taehyung Jang, Raja Kumaresan, Jinhwan Yoon, Sung‐Ho Jin   +11 more
wiley   +1 more source

Macrocyclization of ω‐Isocyano Aldehydes

Angewandte Chemie, EarlyView.
The ω‐isocyano aldehydes readily undergo cyclization to afford α‐acyloxy, α‐hydroxy, α‐acetamido, and α‐keto macrolactams, as well as tetrazole‐fused macrocycles, via C(sp3)─C(sp2) bond formation, providing access to diverse α‐functionalized medium‐sized lactams and macrolactams. ABSTRACT Medium‐sized rings and macrocycles constitute a privileged class
Baochao Yang, Teerawat Songsichan, Cyril Piemontesi, Qian Wang, Jieping Zhu   +4 more
wiley   +2 more sources

Synthesis of New Azetidine and Oxetane Amino Acid Derivatives through Aza-Michael Addition of NH-Heterocycles with Methyl 2-(Azetidin- or Oxetan-3-Ylidene)Acetates

Molecules, 2023
In this paper, a simple and efficient synthetic route for the preparation of new heterocyclic amino acid derivatives containing azetidine and oxetane rings was described.
Emilis Gudelis, Sonata Krikštolaitytė, Monika Stančiauskaitė, Urtė Šachlevičiūtė, Aurimas Bieliauskas, Vaida Milišiūnaitė, Rokas Jankauskas, Neringa Kleizienė, Frank A. Sløk, Algirdas Šačkus   +9 more
doaj   +1 more source

Carcinogenic Heterocyclic Amines in the Environment.

Nippon Eiseigaku Zasshi (Japanese Journal of Hygiene), 1991
The purpose of this report is to summarize data on carcinogenic heterocyclic amines mainly from the aspect of environmental medicine. Since 1977, a new series of heterocyclic amines has been isolated as potent mutagens and they have been shown to be carcinogenic to experimental animals.
openaire   +3 more sources

Low‐Dimensional Metal Halide‐Organic Interdigitated p/n Heterojunction Solar Cells Enabled by Thiomorpholine Hydroiodide Additive

Advanced Electronic Materials, EarlyView.
Thiomorpholine hydroiodide has been developed for regulating crystallization kinetics and passivating defects of two‐dimensional metal halides, enabling the low‐dimensional metal halide‐organic interdigitated p/n heterojunction solar cells to exhibit an efficiency of 24.27% with excellent stability. ABSTRACT Low‐dimensional metal halides are attractive
Jiahao Zhang, Ben Fan, Qi Wang, Xiaopeng Xu, Yihui Wu, Qiang Peng   +5 more
wiley   +1 more source