In the presence of IR irradiation by the use of solid support montmorillonite KSF, under solvent free conditions four component aldehyde, Dione, Meldrum acid and ammonium acetate react for the formation of 1, 4 dihydropyridine derivatives. This is a greener method and one pot synthesis. Minimum reaction time and higher yield are the advantages of this process. The product can be purifying by ch...

Allylic and benzylic alcohols are converted into corresponding unsymmetrical ethers when reacted with various orthoesters in the presence of montmorillonite KSF at ambient temperature. A detailed study has been undertaken to examine the mechanism and generality of these reactions with regard to various acidic catalysts, which reveal interesting competitive reactions mainly O-acetylation, togeth...

The arylidienes of spiro thiazolidines (5) containing α,β-unsaturated function have been used as component of Micheal addition with equimolar amount of 2-aminopyridine (6a) to give novel spiro [indole-3,2′-pyrido[1,2-a]thiazolo[5,4-e]pyrimidines] (7) in a single step under microwaves in presence of montmorillonite KSF as solid support. The new improved synthetic method for spiro [indole-3, 2′-t...

Dr George and Mr Jorgensen are from KSF Orthopaedic Center, Houston, Texas. Dr George and Mr Jorgensen have no relevant fi nancial relationships to disclose. Correspondence should be addressed to: Michael S. George, MD, 17270 Red Oak Dr, Ste 200, Houston, TX 77090 ([email protected]). doi: 10.3928/01477447-20100924-16 Subcoracoid suture and/or graft passage is a technically diffi cult aspect...

BACKGROUND Curcumin and vanillin are the two useful compounds in food and medicine. Bismuth nitrate pentahydrate is an economical and ecofriendly reagent. METHOD Bismuth nitrate pentahydrate impregnated montmorillonite KSF clay and curcumin were subjected to microwave irradiation. RESULTS Microwave-induced bismuth nitrate-promoted synthesis of vanillin from curcumin has been accomplished in...

Fluoride excess in drinking water is noticed many countries around the world and particularly Senegal where, addition to fluoride excess, high levels of salinity are also encountered. In order reduce groundnut basin Senegal, two types clays namely montmorillonite KSF K10 as well were used adsorbent materials. The results show that pH which was initially alkaline becomes acidic varying from 2.80...

We propose to use a hybrid downconverter system comprising low-cost green perovskite-polymer composite films for liquid crystal display (LCD) backlight unit (BLU) to realize wide color gamut. Recently, ultrastable, highly luminescent CH3NH3PbBr3 (MAPbBr3) organic-inorganic perovskite-polymer composite films have been developed. These films exhibit outstanding color quality with a full-width-at-...