This study was aimed at determining the effect, if any, that steric factors may have on the diastereoselectivity in the spiroannulation of simple phenols. A series of phenols bearing different size substituents ortho to the phenolic hydroxyl were synthesized and spiroannulated to the corresponding spiroethers in good to excellent yields (76-94%). However, the diastereoselectivity of the reactio...

Pyrolysis of phenolic resins leads to carbon formation. Simulating this resin-to-carbon process atomistically is a daunting task. In this paper, we attempt to model the initial stage of this process by using the ReaxFF reactive force field, which bridges quantum mechanical and molecular mechanical methods. We run molecular dynamics simulations to examine the evolution of small molecules at diff...

Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan University of Nationalities, Kunming 650031, P. R. China *E-mail: [email protected] (Q.-F. Hu); [email protected] (X. Li) Key Laboratory of Tobacco Chemistry of Yunnan Province, Yunnan Academy of Tobacco Science, Kunming 650106, P. R. China Received February 6, 2012, Accepte...

Introduction Structure of plant phenolics or more hydroxy substituents Role of phenolics in olives Properties and function Phenolics as antioxidants Phenolics and fruit quality Factors affecting the phenolic profile of olives Varietal influences Other factors Olive development and maturation Processing and storage Oil production Table olives Analysis Sample preparation Quantification Chromatogr...

Received 12 Dec., 2013 Accepted 21 Apr., 2014 (006240) 1 Transdisciplinary Team of Analytical Science for Sustainable Development, Faculty of Science and Technologies, Sultan Moulay Slimane University, Beni Mellal, Morocco 2 Laboratory of Biological Engineering, Faculty of Science and Technologies, Sultan Moulay Slimane University, Beni Mellal, Morocco, e-mail: [email protected] 3 Labo...

The knowledge generated by this stream has increased the wine industry’s capacity for meeting wine specification and consumer expectations and improving profitability. In particular, this stream was undertaken to provide the Australian wine industry with an improved understanding of structures, measurement, formation and function of phenolic compounds in red and white grapes and wines. Compound...