The invention relates to a method for producing acyloxy benzoic acids of the formula (I), in which R
1
is a linear or branched saturated alkyl group with 6 to 30 carbon atoms, a linear or branched mono- or polyunsaturated alkenyl group with 6 to 30 carbon atoms, or an aryl group with 6 to 30 carbon atoms. The acyloxy benzoic acids of the formula (I) are produced from para-hydroxy benzoic acid and a corresponding carboxylic acid halide in the presence of an alkali hydroxide.
Crystal of p-hydroxybenzoic anhydride and process for producing the same
申请人:Ueno Ryuzo
公开号:US20060264670A1
公开(公告)日:2006-11-23
The present invention provides a process for preparing crystalline parahydroxybenzoic acid anhydride, comprising the step of precipitating and isolating parahydroxybenzoic acid in an aqueous solvent at a temperature equal to or above the transition temperature of parahydroxybenzoic acid.
The invention provides complexes of the formula:
wherein
X is chloro, hydrogen, vinyl, or -CH3,
Z is CH2, S, or O;
n is 0-5;
Y is phenyl or 1,4-cyclohexadien-1-yl;
R1 and R2 are hydrogen or hydroxy, with the proviso that R1 and R2 are not both hydrogen and
R3 is -COO-, -COO(C1-C4 alkyl),-N02 or
wherein R4 is C1-C4 alkyl.
CRYSTAL OF p-HYDROXYBENZOIC ANHYDRIDE AND PROCESS FOR PRODUCING THE SAME
申请人:Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
公开号:EP1614673A1
公开(公告)日:2006-01-11
The present invention provides a process for preparing crystalline parahydroxybenzoic acid anhydride, comprising the step of precipitating and isolating parahydroxybenzoic acid in an aqueous solvent at a temperature equal to or above the transition temperature of parahydroxybenzoic acid.
Polypeptides having endoglucanase activity and polynucleotides encoding same
申请人:Novozymes A/S
公开号:EP2336309A2
公开(公告)日:2011-06-22
The present invention relates to isolated polypeptides having endoglucanase activity and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods for producing and using the polypeptides.