Results 41 to 50 of about 3,775 (183)

Chiral (Stereoselective) Drugs, Asymmetric Synthesis, and Racemic Resolution Methods

Chirality, Volume 38, Issue 7, July 2026.
Chirality is crucial in drug development since both biological targets in the organism and the majority of pharmaceutical compounds are chiral. The synthesis and resolution of chiral compounds are critical steps while developing chiral drugs. Asymmetric synthesis and racemic resolution are the two most common methods for obtaining enantiopure drugs ...
Burcu Karayavuz, Cigdem Karaaslan Kirmizioglu   +1 more
wiley   +1 more source

Synthesis and Antimicrobial Activity of Newer Quinazolinones

E-Journal of Chemistry, 2006
2–alkyl–6–bromo–3,1–benzoxazine–4–one (2) is synthesized by treating p–Bromoanthranilic acid and Acetylechoride or Benzoylchloride. Reaction of 2–alkyl–6–bromo–3,1–benzoxazine–4–one (2). with hydrazinehydrate furnish the corresponding 3–Amino–2–methyl–6–
J. A. Patel, B. D. Mistry, K. R. Desai
doaj   +1 more source

Crystallographic and Spectroscopic Investigations on Oxidative Coordination in the Heteroleptic Mononuclear Complex of Cerium and Benzoxazine Dimer

Molecules, 2021
Among lanthanide-based compounds, cerium compounds exhibit a significant role in a variety of research fields due to their distinct tetravalency, high economic feasibility, and high stability of Ce(IV) complexes.
Worawat Wattanathana, Natapol Suetrong, Peetikamol Kongsamai, Kantapat Chansaenpak, Nutthawat Chuanopparat, Yuranan Hanlumyuang, Pongsakorn Kanjanaboos, Suttipong Wannapaiboon   +7 more
doaj   +1 more source

Multi‐Induction Strategies in Crops: Mechanisms, Synergistic Effects, and Sustainable Applications for Enhanced Secondary Metabolite Production

Food Frontiers, Volume 7, Issue 4, July 2026.
This review analyzes single/combined abiotic (light, water, nutrients, hormones) and biotic (microbes, yeast) elicitors regulating signaling, gene expression, and metabolism to boost plant secondary metabolites. It highlights synergistic multielicitor strategies for crop quality and functional foods, while critically addressing current limitations and ...
Yifei Sun, Daoyan Xiao, Xingyue Li, Zhaofei Wang, Maoqin Xia, Chao Song, Hong‐Lei Li   +6 more
wiley   +1 more source

Synthesis Of Some Substituted 1,2,5-Oxadiazino [2-3,b] Quinazoline And Some 1,3-Oxazole Derivatives [PDF]

مجلة التربية والعلم, 2013
In this paper the synthesis of some 1,2,5- oxadiazino [2-3,b] quinazoline and some substituted 1,3- oxazole are reported, alanine and valine were reacted with benzoyle chloride in sodium hydroxide solution to give N- benzoyle alanine or valine (1,2 ...
Yassir S. Mohamad
doaj   +1 more source

Catalyzing Benzoxazine Polymerization with Titanium-Containing POSS to Reduce the Curing Temperature and Improve Thermal Stability

Molecules, 2023
Trisilanolphenyl-polyhedral oligomeric silsesquioxane titanium (Ti-Ph-POSS) was synthesized through the corner-capping reaction, and Ti-Ph-POSS was dispersed in benzoxazine (BZ) to prepare Ti-Ph-POSS/PBZ composite materials. Ti-Ph-POSS could catalyze the
Xiaoyi Sun, Qixuan Fu, Pei Dai, Caili Zhang, Riwei Xu   +4 more
doaj   +1 more source

Preparation and Properties of Poly(urethane-benzoxazine)s Based on Monofunctional Benzoxazine Monomer [PDF]

Polymer Journal, 2001
Poly(urethane-benzoxazine) films were prepared by blending a monofunctional benzoxazine monomer, 3-phenyl-3,4-dihydro-2H-1,3-benzoxazine (Pa), and polyurethane (PU) prepolymer that was synthesized from 2,4-tolylene diisocyanate and polyethylene adipate polyol (Mw ca. 1000) in 2:1 molar ratio, followed by casting as films and thermal curing of the films.
Takeichi, Tsutomu, Guo, Yong
openaire   +1 more source

Sulfur‐Rich Sustainable Copolymers for Enhancing Redox Kinetics and Alleviating Cathode Passivation in Lithium‐Sulfur Batteries

Exploration, Volume 6, Issue 3, June 2026.
A molecularly engineered, sustainable sulfur‐rich redox copolymer cathode delivers accelerated sulfur conversion and suppressed passivation, enabling high sulfur utilization and durable, high‐performance LiS batteries. ABSTRACT Lithium‐sulfur (Li‐S) batteries are promising candidates for advanced energy storage systems.
Sangeeta Sahu, Arnab Ghosh, Monisha Monisha, Murali Krishna, Shakir Ali Siddiqui, Sunan Tian, De‐Yi Wang, Sagar Mitra, Bimlesh Lochab   +8 more
wiley   +1 more source

Main-Chain Benzoxazines Containing an Erythritol Acetal Structure: Thermal and Degradation Properties

Molecules, 2023
In this paper, the bio-based raw material erythritol was used to introduce an acetal structure into the benzoxazine resins. The benzoxazine-based resins containing an erythritol acetal structure could be degraded in an acidic solution and were ...
Huili Yang, Yanqin Du, Guangshe Zhang, Ling Han, Longgui Zhang, Riwei Xu   +5 more
doaj   +1 more source

Thickness Reduction Strategy for Graphite Composite Bipolar Plates: Materials, Structure, and Manufacturing Process

Carbon Neutralization, Volume 5, Issue 3, May 2026.
Schematic diagram of challenges and advanced strategies by CBP after thickness reduction. ABSTRACT The proton exchange membrane fuel cell (PEMFC) converts clean hydrogen's chemical energy into electricity and is vital for carbon neutrality. However, its development is limited by low volumetric power density and high cost.
Chengxin Li, Xiaomin Meng, Yi Zhang, Chenyao Li, Junsheng Zheng, Victor V. Tcherdyntsev, Pingwen Ming   +6 more
wiley   +1 more source