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14173-30-9 51984-46-4 62733-99-7欧盟法规
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参考文献:Gilchrist,Thomas L.; Iskander,George M.; Yagoub,Ahmed K.,Journal Of The Chemical Society. Perkin Transactions I,1985,P. 2769-2774
标题:Gilchrist,Thomas L.; Iskander,George M.; Yagoub,Ahmed K.,Journal Of The Chemical Society. Perkin Transactions I,1985,P. 2769-2774
专利信息
专利号:US-2009118512-A1
优先权日:2006-03-31
标 题:Process for Preparing 6,7-Dihydro-5H-Imidazo[1,5-A]Pyridin-8-One
发明人:MARTIN PIERRE; BOUDIER ANDREAS; QUIRMBACH MICHAEL; MAH ROBERT; JOTTERAND NATHALIE
权利人:MARTIN PIERRE; BOUDIER ANDREAS; QUIRMBACH MICHAEL; MAH ROBERT; JOTTERAND NATHALIE
摘要:6,7-Dihydro-5H-imidazo[1,5-a]pyridin-8-one (I), is obtainable in high yields by: 1) a process which proceeds from a suitably protected C-(3-hydroxypyridin-2-yl)methylamine whose amine is converted to the formamide which is then cyclized to the imidazo[1,5-a]pyridine and hydrogenated to the 6,7-dihydro-5H-imidazo[1,5-a]pyridin-8-one, and suitably protected C-(3-hydroxypyridin-2-yl)methylamines can be prepared either in 2 steps proceeding from commercially available 3-hydroxy-2-cyanopyridine [932-35-4] or in 3 steps proceeding from commercially available 2-hydroxymethylpyridin-3-ol [14173-30-9]; 2) a process for preparing 4-hydroxy-1-(1H-imidazol-4-yl)butan-1-one, an intermediate from the synthesis of 6,7-dihydro-5H-imidazo[1,5-a]pyridin-8-one (formula I), as described in WO 2002/040484, proceeding from N,N-dimethyl-2-(trialkylsilanyl)imidazole-1-sulphonamide by lithiation and subsequent reaction with a suitably protected 4-hydroxybutyraldehyde, followed by oxidation of the secondary alcohol, acid-induced deprotection of the imidazole and deprotection of the alcohol functionality; 3) a process which proceeds from 5,6,7,8-tetrahydroimidazo[1,5-a]pyridine [38666-30-7], which is oxidized.
专利号:US-9028768-B2
优先权日:2007-11-26
标 题 :Metal alkoxides, apparatus for manufacturing metal alkoxides, related methods and uses thereof
发明人:ROSSETTI MARK N; DUTTA PARTHA S; LEWIS SARAH L; LITZ KYLE E; JORDAN TRACEY M; VREELAND JENNIFER L
权利人:ROSSETTI MARK N; DUTTA PARTHA S; LEWIS SARAH L; LITZ KYLE E; JORDAN TRACEY M; VREELAND JENNIFER L; AUTERRA INC
摘要:Compounds, synthesis of, and methods for synthesizing metal alkoxide derivatives; and metal alkoxide derivatives for use as flame retardants are described. Group 13 metal alkoxides having flame retardant properties may be prepared by reacting the group 13 metal trihydroxide with an alcohol.