@article { ISI:000226714000027, title = {Convenient synthesis of 5-methylene-4-substituted-2(5H)-furanones}, journal = {Tetrahedron Letters}, volume = {46}, number = {6}, year = {2005}, month = {FEB}, pages = {1009-1012}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

A synthesis of novel 4-(substituted)benzyl-5-methylene-2(5H)-furanones involving Stobbe condensation of substituted aldehydes with ethyl levulinate followed by treatment with acetic anhydride in the presence of sodium acetate, has been developed. (C) 2004 Elsevier Ltd. All rights reserved.

}, keywords = {5-methylene-2(5H)-furanones, acetic anhydride, arylaldehydes, ethyl levulinate, sodium acetate}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2004.12.040}, author = {Mahajan, Vishal A. and Shinde, Popat D. and Borate, Hanumant B. and Wakharkar, Radhika D.} } @article { ISI:000252339100015, title = {Efficient method for the synthesis of acylals from aldehydes under solvent-free conditions catalyzed by antimony trichloride}, journal = {Synthetic Communications}, volume = {38}, number = {1}, year = {2008}, month = {MAY}, pages = {128-134}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

A mild and efficient method has been developed for the preparation of acylals from aldehydes catalyzed by antimony trichloride under solvent-free conditions in very good to excellent yields. The easy availability, low cost, and ease of handling of the catalyst make this procedure especially attractive for large-scale synthesis.

}, keywords = {acetic anhydride, Acylals, aldehydes, antimony trichloride, solvent-free conditions}, issn = {0039-7911}, doi = {10.1080/00397910701651284}, author = {Bhattacharya, Asish K. and Mujahid, Mohammad and Natu, Arvind A.} } @article { ISI:000256530800003, title = {SbCl(3) as a highly efficient catalyst for the acetylation of alcohols, phenols, and amines under solvent-free conditions}, journal = {Synthetic Communications}, volume = {38}, number = {10}, year = {2008}, month = {APR}, pages = {1518-1526}, publisher = {TAYLOR \& FRANCIS INC}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

Antimony trichloride has been found to be an efficient and expedient catalyst for the acylation of alcohols, phenols, amines, and sugars with acetic anhydride in high yields and in a short reaction time under solvent-free conditions at room temperature. Also, racemization of chiral alcohols and epimerization of sugars were not observed in any of the substrates.

}, keywords = {acetic anhydride, acetylation, antimony trichloride, solvent-free conditions}, issn = {0039-7911}, doi = {10.1080/00397910801928640}, author = {Bhattacharya, Asish K. and Diallo, Mamadou A. and Ganesh, Krishna N.} } @article { ISI:000257016800018, title = {Titania supported silicotungstic acid: an efficient solid acid catalyst for veratrole acylation}, journal = {Catalysis Communications}, volume = {9}, number = {10}, year = {2008}, month = {JUN}, pages = {2026-2029}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Titania supported silicotungstic acid (STA) with different STA loading (10-25 wt\%) and calcination temperature (650-750 degrees C) were prepared by wet impregnation method. The catalysts have been represented by a general formula xSTiO(2)y (where x denotes wt\%, S denotes STA and y denotes calcination temperature in degrees C). These catalysts were characterized by techniques such as X-ray diffraction, surface analysis, FTIR-pyridine and TPD-NH(3) and were used as heterogeneous solid acid catalysts in the liquid phase acylation of veratrole with acetic anhydride (Ac(2)O). It was found that 20STiO(2)700 gave the highest activity in acylation reaction due to its highest acidity. (C) 2008 Elsevier B.V. All rights reserved.

}, keywords = {acetic anhydride, Acylation, Silicotungstic acid, titania, veratrole}, issn = {1566-7367}, doi = {10.1016/j.catcom.2008.03.043}, author = {Waghmare, Nilesh G. and Kasinathan, Palraj and Amrute, Amol P. and Lucas, Nishita and Halligudi, Shivaraj B.} } @article {48095, title = {Use of isoperibolic reaction calorimeter for the study of reaction kinetics of acetic anhydride hydrolysis reaction: effect of acetic anhydride and water ratio}, journal = {Chemical and Process Engineering-Inzynieria Chemiczna I Procesowa}, volume = {43}, year = {2022}, month = {DEC}, pages = {255-264}, type = {Article; Proceedings Paper}, abstract = {

Reaction kinetics of acetic anhydride hydrolysis reaction is being studied at a fixed reaction temperature and ambient pressure using an isoperibolic reaction calorimeter. Temperature versus time data along with heat and mass balance is used to determine the kinetics parameters i.e. activation energy and Arrhenius coefficient. It has been studied with the varying volumetric ratio of acetic anhydride and water; and kinetics parameters were compared and plotted for each ratio. Such a study has not been done previously to determine the kinetics dependency on varying the acetic anhydride water ratio. As the acetic anhydride hydrolysis reaction is exothermic in nature, the present study will help to decide the safe and suitable operating conditions such as concentration and temperature for conducting this reaction at plant scale. The kinetic data presented can be used further for the mathematical modeling and simulation of such exothermic hydrolysis reactions.

}, keywords = {acetic anhydride, Hydrolysis, kinetics, reaction calorimeter, Water}, issn = {0208-6425}, doi = {10.24425/cpe.2022.140829}, author = {Kumar, Rajendra and Tiwari, Anurag Kumar} }