Bisphenol compound and process for preparation thereof
申请人:More Sudhakar Arvind
公开号:US20070073090A1
公开(公告)日:2007-03-29
The present invention provides a novel bisphenol compound of formula (I).
wherein R
1
and R
2
are the same or different and are independently either hydrogen or methyl at each occurrence. The present invention also provides a process for preparation of these bisphenol compounds starting from Cashew Nut Shell Liquid (CNSL); —a renewable resource material. The bisphenols prepared in the present invention can be utilized as difunctional monomers for the preparation of various polymers such as epoxy resins, polyesters, polyethersulfones, polyetherketones, polyetherimides, polyarylates, polycarbonates, etc.
Johnstone, Robert A. W.; Price, Peter J., Journal of the Chemical Society. Perkin transactions I, 1987, p. 1069 - 1076
作者:Johnstone, Robert A. W.、Price, Peter J.
DOI:——
日期:——
US7446234B2
申请人:——
公开号:US7446234B2
公开(公告)日:2008-11-04
Rapid Cesium Fluoride Catalyzed Synthesis of 5-Aryloxy-1-phenyl-1Htetrazoles via Nucleophilic Aromatic Substitution
作者:Khalid Mohammed Khan、Itrat Fatima、Shahnaz Perveen、Syed Muhammad Saad
DOI:10.2174/1570178617999200728211046
日期:2021.5
A nucleophilic aromatic substitution via a new and facile cesiumfluoridecatalyzed synthetic approach to get 5-aryloxy-1-phenyl-1H-tetrazoles was developed. Dual usage of cesiumfluoride as a nucleophilic catalyst as well as an electrophilic catalyst afforded the desired products at room temperature in a short reaction time without purification in high yields. This simple but useful reaction may be
Observation of burst kinetics in heterogeneous catalytic transfer hydrogenolysis
作者:Donald Bethell、Robert A. W. Johnstone、Peter J. Price
DOI:10.1039/c39850000303
日期:——
Arene formation by catalytictransferhydrogenolysis of aryl tetrazolyl ethers in the liquid phase shows biphasic concentration–time curves indicating rate-limiting dissociation of heterogeneous complexes between catalyst and tetrazolone produced under steady state conditions.