790-16-9Relevant articles and documents
Heterocyclic Schiff base derivatives containing pyrazolone moiety: Synthesis, characterization, and in vitro biological studies
??nar, Ercan,Ba?aran, Eyüp,Erdo?an, ?mer,?akmak, Re?it,Bo?a, Mehmet,?evik, ?zge
, p. 2355 - 2367 (2021/10/25)
In this study, some pyrazolone-based Schiff base derivatives 2a-e (except 2a) were synthesized for the first time and structurally illuminated by some spectroscopic techniques (1H, 13C NMR, FT-IR) and elemental analysis. All synthesi
New imidazolone derivatives comprising a benzoate or sulfonamide moiety as anti-inflammatory and antibacterial inhibitors: Design, synthesis, selective COX-2, DHFR and molecular-modeling study
Metwally, Nadia Hanafy,Mohamed, Mona Said
, (2019/12/12)
New imidazol-5-one derivatives 12a,b and 12e, f, 14a,b and 16a,b were synthesized and screened for their in vivo anti-inflammatory activity using a standard acute carrageenan-induced rat paw oedema method. All the tested compounds exhibited good anti-infl
Green synthesis of some new thiopyrano[2,3-d][1,3]thiazoles using lemon juice and their antibacterial activity
Metwally, Nadia Hanafy,Badawy, Mohamed Ahmed,Okpy, Doha Samir
, p. 2496 - 2509 (2018/10/20)
A simple green method has been developed for the synthesis of a series of new 3-phenyl-6-(substituted)-thiopyrano[2,3-d]thiazole-2,5,7(6H)-triones, 6-cyano-2-oxo-3-phenyl-thiopyrano[2,3-d]thiazoles, 3-phenyl-3,5,5a,11b-tetrahydro-2H,6H-chromeno-[4′,3′:4,5
Synthesis of lignin model compound containing a β-O-4 linkage
Mukhtar, Asma,Zaheer, Muhammad,Saeed, Muhammad,Voelter, Wolfgang
, p. 119 - 124 (2017/12/26)
Development of catalysts for efficient conversion of lignin polymer to value-added materials requires appropriately-functionalized lignin model compounds. The predominant structural feature of lignin biopolymer is an extensive network of β-O-4 linkages. A
Ph3P-I2 mediated aryl esterification with a mechanistic insight
Phakhodee, Wong,Duangkamol, Chuthamat,Pattarawarapan, Mookda
supporting information, p. 2087 - 2089 (2016/04/26)
In order to better understand the reaction mechanism and to obtain optimal conditions, the Ph3P-I2/Et3N mediated aryl esterification reaction was thoroughly investigated. Using a specific reagent addition sequence, the reaction proceeds remarkably well especially with acidic substrates. 31P NMR studies revealed that the formation of an aryloxyphosphonium salt is crucial in governing the reaction path toward the formation of phenolic esters.
Solid-Phase Benzoylation of Phenols and Alcohols in Microwave Reactor: An Ecofriendly Protocol
Chakraborty, Suchandra,Saha, Ahana,Basu, Kaushik,Saha, Chandan
supporting information, p. 2331 - 2343 (2015/10/12)
An efficient solid-phase benzoylation of phenols and alcohols was developed under microwave irradiation. A stoichiometric amount of benzoyl chloride was sufficient to carry out the reaction. This benzoylation features short reaction time, good yields, and easy workup procedures. Furthermore, the scope of the reaction was extended to prepare 3,5-dinitrobenzoyl derivatives of alcohols.
A green chemistry method for the regeneration of carbonyl compounds from oximes by using cupric chloride dihydrate as a recoverable promoter for hydrolysis
Quan, Na,Shi, Xiao-Xin,Nie, Liang-Deng,Dong, Jing,Zhu, Rui-Heng
experimental part, p. 1028 - 1032 (2011/06/17)
A mild, efficient, general, and green method for the regeneration of carbonyl compounds from their corresponding oximes is described. Cupric salts promoted hydrolysis of oximes was studied, and the best reaction conditions for the hydrolysis have been found. Carbonyl compounds were obtained in 85-98% yields after the treatment of oximes with 2 molar equivalent of CuCl 22H2O at reflux (around 75 C) in a mixed solvent of acetonitrile and water (4:1). In addition, cupric salt was readily recovered in an almost quantitative yield via the complete precipitation of Cu(OH) 22H2O. Georg Thieme Verlag Stuttgart · New York.
Nature and kinetic analysis of carbon-carbon bond fragmentation reactions of cation radicals derived from SET-oxidation of lignin model compounds
Cho, Dae Won,Parthasarathi, Ramakrishnan,Pimentel, Adam S.,Maestas, Gabriel D.,Park, Hea Jung,Yoon, Ung Chan,Dunaway-Mariano, Debra,Gnanakaran,Langan, Paul,Mariano, Patrick S.
experimental part, p. 6549 - 6562 (2010/12/19)
Features of the oxidative cleavage reactions of diastereomers of dimeric lignin model compounds, which are models of the major types of structural units found in the lignin backbone, were examined. Cation radicals of these substances were generated by using SET-sensitized photochemical and Ce(IV) and lignin peroxidase promoted oxidative processes, and the nature and kinetics of their C- bond cleavage reactions were determined. The results show that significant differences exist between the rates of cation radical C1-2 bond cleavage reactions of 1,2-diaryl-(β-1) and 1-aryl-2-aryloxy-(β-O-4) propan-1,3-diol structural units found in lignins. Specifically, under all conditions C1-2 bond cleavage reactions of cation radicals of the β-1 models take place more rapidly than those of the β-O-4 counterparts. The results of DFT calculations on cation radicals of the model compounds show that the C1-2 bond dissociation energies of the β-1 lignin model compounds are significantly lower than those of the β-O-4 models, providing clear evidence for the source of the rate differences.
Esters derived from vanillin and vanillal and aromatic and functionalized aliphatic carboxylic acids
Dikusar,Kozlov
, p. 992 - 996 (2007/10/03)
Reactions of vanillin and vanillal with aromatic and functionally substituted aliphatic carboxylic acid chlorides in the presence of pyridine afforded the corresponding previously unknown esters.
