95652-97-4Relevant academic research and scientific papers
Formation of benzylidenes-diacetates catalyzed by activated zeolite "LZY-562" and clay (K10/ZnCl2): An unexpected functional selectivity
Dokari,Hammadi,Benferrah,Rachedi
, p. 1973 - 1976 (2015/12/01)
Activated zeolites LZY-562 and clay montmorillonite K10 at room temperature without solvent catalyzes the synthesis of benzylidenesdiacetates from carbonyl compounds. A chemoselectivity was observed between aldehydes and ketones, between the different aldehydes and ketones as well.
Practical synthesis of gem-difluorides from cyclohexanone: Synthesis of gem-bistrifluoroacetates and their reactions with fluoride nucleophiles
Tojo, Masahiro,Fukuoka, Shinsuke,Tsukube, Hiroshi
experimental part, p. 29 - 35 (2010/03/30)
Formation of ketone acylals bearing trihaloacetoxy groups and their nucleophilic geminal disubstitution by fluoride ions were investigated. Cyclohexanone reacted with trifluoroacetic anhydride without catalyst to give gem-bistrifluoroacetates via a concerted bimolecular reaction. Treatment with hydrogen fluoride under mild conditions efficiently yielded the corresponding gem-difluorides. In this reaction process, trifluoroacetic acid was recovered and converted to trifluoroacetic anhydride using P2O5. Since gem-difluorides were derived from ketones, HF and P2O5, this constitutes a practical synthesis of gem-difluorides.
A simple and efficient method for the synthesis of gem-diacetates from aldehydes and ketones catalysed by gallium triiodide
Sun, Peipei,Hu, Zhixin
, p. 659 - 660 (2007/10/03)
Aldehydes or ketones reacted with acetic anhydride in dichloromethane at ambient temperature to produce gem-diacetates in good to excellent yields in the presence of gallium triiodide, which was generated in situ from gallium and iodine. This catalyst was also useful for the deprotection of carbonyl compounds in the presence of water.
Zn(OTf)2.6H2O catalysed acylation of aldehydes: Preparation of 1,1-diacetates and α-chloroalkyl esters
Su, Weike,Can, Jin
, p. 88 - 90 (2007/10/03)
1,1-Diacetates (acylals) and α-chloroalkyl esters were prepared from carbonyl compounds with acylating reagents in the presence of 5% mol hexaaqua zinc triflate [Zn(OTf)2.6H2O] with good yields under mild reaction conditions.
Preparation and deprotection of 1,1-diacetates (acylals) using zirconium sulfophenyl phosphonate as catalyst
Curini, Massimo,Epifano, Francesco,Marcotullio, Maria Carla,Rosati, Ornelio,Nocchetti, Morena
, p. 2709 - 2711 (2007/10/03)
Layered zirconium sulfophenyl phosphonate was found to be an efficient heterogeneous catalyst for the preparation and deprotection of 1,1-diacetates.
