Biocell - Three step process for obtaining a liquid biofuel from cellulose consisting mainly of isomers of methylpyran and methyl tetrahydropyran using N alkyl imidazol chloride as solvent and catalyst
申请人:Correia Pedro Brito da Silva
公开号:US20100305340A1
公开(公告)日:2010-12-02
Three step process for obtaining liquid biofuels consisting mainly of isomers of methylpyran and methyl tetrahydropyran from cellulose, hemicelluloses or starch, using in a first step N alkyl imidazol chloride containing a slight excess of hydrochloric acid 37%. This mixture acts as a solvent and catalyst for dissolution and hydrolysis of cellulose and dehydration of glucose to isomers of hydroxymethyl pyranone (HMP).
In a second step the reaction mixture is mixed with a water solution of sodium chloride to increase the ionic strength, and to make possible an extraction with butanol, which otherwise is miscible with the ionic liquid reaction mixture. Butanol was found to be the best solvent for HMP under these conditions.
In a third step, the butanol extract is concentrated by distillation, and the concentrate is submitted to hydrogenation with gaseous hydrogen using palladium or platin catalysts on carbon or alumina.
The final mixture is separated from butanol by distillation.
By GCMS only one relevant product was obtained representing about 90% of final products. It was identified by NMR as 2-methyl pyran.
Compounds and methods of treating cell proliferative diseases
申请人:Leblanc Veronique
公开号:US20050054629A1
公开(公告)日:2005-03-10
The present invention relates to compounds and their uses, particularly in the pharmaceutical industry. The invention discloses compounds having anti-proliferative activities, as well as methods for treating various diseases associated with abnormal cell proliferation, including cancer, by administering said compounds. It further deals with pharmaceutical compositions comprising said compounds, more particularly useful to treat cancers.