Results 71 to 80 of about 2,598 (200)

PdCl₂-Catalyzed Two-Component Cross-Coupling Cyclization of 2,3-Allenoic Acids with 2,3-Allenols. An Efficient Synthesis of 4-(1‘,3‘-Dien-2‘-yl)-2(5H)-furanone Derivatives

, 2016
Cross-coupling cyclization reaction between 2,3-allenoic acids 1 and 2,3-allenols 2, in which two allenes functioned differently, was realized to afford 4-(1‘,3‘-dien-2‘-yl)-2(5H)-furanone derivatives 3.
Shengming Ma (1312428), Zhenhua Gu (469659)   +1 more
core   +2 more sources

Bean‐to‐Bar Chocolate: An Integrative Framework Linking Terroir, Biochemistry, Processing, and Sensory Expression

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT The bean‐to‐bar movement, which emerged in the United States in 1996, represents a transformative approach to chocolate production and consumption by integrating craftsmanship, sustainability, and gastronomic authenticity. This study conducted a literature review using the narrative approach, as the object of investigation encompasses both ...
Paola Romanova do Nascimento Costa, Maico da Silva Silveira, Júlio César DoVale, Paulo Henrique Machado de Sousa   +3 more
wiley   +1 more source

Rubrolides A, D, P, T, U: Total Syntheses and Antibacterial Evaluation of Highly Brominated Marine Natural Products

ChemistryEurope, Volume 4, Issue 4, April 2026.
Following the Danube Flow. The first total syntheses of highly brominated rubrolides T, U, and U‐analog, together with the efficient and divergent syntheses of rubrolides A, D, and P. The dibrominated key intermediate, obtained via a Suzuki‐Miyaura cross‐coupling reaction, is the centerpiece of the synthesis.
Jasmin Janneschütz, Paul G. Schebek, Alexander Meyer, Celina Haller, Sophia Khom, Wolfgang R. Streit, Ifey Alio, Nina Schützenmeister   +7 more
wiley   +1 more source

Stereoselectivity of cycloadditions of arylnitrile oxides to 5-alkoxy-2(5H)-furanone

, 1987
1,3-Dipolar cycloaddition of arylnitrile oxides to 5-alkoxy-2(5H)-furanones (II) and 5-hydroxy-2(5H)-furanone leads regiospecifically to 4-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d]isoxazole derivatives IIIa-IIIj.
Lubor Fišera, Peter Oravec
core   +1 more source

Selective Oxidation of Furfural to 2(5H)-Furanone and Maleic Acid over CuMoO4

, 2021
Green synthesis of high-value furanone derivatives and C4 organic acids from renewable biomass is a promising yet challenging route. Herein, we report a suitable heterogeneous and recoverable bimetallic CuMoO4 catalyst for the selective oxidation of ...
Jiawen Zheng, Xing Tang, Weile Li, Wenlong Jia, Huai Liu (490771), Huai Liu, Lu Lin (201289), Jiawen Zheng (11462025), Xing Tang (270198), Lu Lin, Xin Yu (124814), Feng Xu (89016), Feng Xu, Wenlong Jia (6504704), Weile Li (2870594), Qian Wang (32718), Yong Sun (406434), Xianhai Zeng (1327254), Yong Sun, Xianhai Zeng, Xin Yu, Qian Wang, Huiqiang Wang (453122), Huiqiang Wang   +23 more
core   +1 more source

Synthesis of azido derivatives of mucobromic acid

Bulletin of the Chemical Society of Ethiopia, 2013
Mucobromic acid is a highly reactive multicentered molecule. It was converted to its corresponding but unstable diazido derivative by reaction with two equivalents of sodium azide.
N. Mbebe, W. Masamba, N. D. Jumbam
doaj  

Scientific opinion on Flavouring Group Evaluation 313, (FGE.313): α,β‐unsaturated 3(2H)‐furanone derivatives from chemical group 13

EFSA Journal, 2016
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of EFSA was requested to evaluate three flavouring substances, 2,5‐dimethyl‐4‐ethoxyfuran‐3(2H)‐one [FL‐no: 13.117], 2,5‐dimethylfuran‐3(2H)‐one [FL‐no: 13.119] and 4‐Acetyl‐2 ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Effects of natural and chemically synthesized furanones on quorum sensing in Chromobacterium violaceum

BMC Microbiology, 2004
Background Cell to cell signaling systems in Gram-negative bacteria rely on small diffusible molecules such as the N-acylhomoserine lactones (AHL). These compounds are involved in the production of antibiotics, exoenzymes, virulence factors and biofilm ...
Brandl Helmut, Séquin Urs, Grossmann Gilles, Martinelli Daniel, Bachofen Reinhard   +4 more
doaj   +1 more source

How Different Traditional and Modern Coffee Brewing Methods Affect Its Aroma, Chemistry, Health Effects and Safety Attributes?—A Comprehensive Review to Maximize Coffee Brew Quality

eFood, Volume 7, Issue 2, April 2026.
This review article provides a comprehensive analysis of coffee pre‐brewing techniques, focusing on the methodology and key parameters involved in each coffee brewing process. It also summarizes how different brewing methods affect the coffee metabolome, antioxidant levels, aroma, and physicochemical features.
Enas A. El‐Hawary, Hania A. Guirguis, Nik Muhammad Azhar Nik Daud, Mohd Asraf Zainudin, Ahmed Mediani, Mohamed A. Farag   +5 more
wiley   +1 more source

Mucochloric and mucobromic acids: Inexpensive, highly functionalised starting materials for the selective synthesis of variously substituted 2(5H)-furanone derivatives, sulfur- or nitrogen-containing heterocycles and stereodefined acyclic unsaturated dihalogenated compounds

, 2004
2(5H)-Furanone derivatives are a large family of heterocycles that include synthetically useful compounds. several natural products and drugs with diverse biological activities.
ROSSI, RENZO, BELLINA, FABIO
core   +1 more source