摘要:
The invention provides a process to separate levulinic acid from a biomass hydrolysate said process comprising extraction using as an organic solvent a substituted benzene comprising (i) at least one OR 1 group wherein R 1 is H or CH 3 ; and (ii) at least one C 1-3 alkyl group, wherein each of the at least one OR 1 group is ortho positioned to at least one C 1-3 alkyl group. Using said substituted benzene as extraction solvent gives good extraction efficiency, the extraction can advantageously be carried out at elevated temperature, and is very suitable for subsequent distillation steps.
摘要:
The present invention relates to substituted 2-[phenoxy-phenyl]-1-[1,2,4]triazol-1-yl-ethanol compounds of formula I as defined in the description,and the N-oxides, and salts thereof, their preparation and intermediates for preparing them. The invention also relates to the use of these compounds for combating harmful fungi and seed coated with at least one such compound and also to compositions comprising at least one such compound.
摘要:
The invention relates to the use of 1-aryl-2-aryloxyethane compounds with formula I, wherein n and m are equal to 0 or 1, provided that n+m=1, R1 and R2 particularly representing hydrogen atoms, R3 and R4 particularly representing hydrogen or halogen atoms or hydroxy or alkoxy groups, and R5 particularly representing hydrogen atoms or hydroxy, alkyl, alkoxy, amino or nitro groups, in cosmetic compositions intended for anti-aging and/or depigmenting and/or anti-inflammatory and/or healing care products.
摘要翻译:如果n + m = 1,R1和R2特别代表氢原子,R3和R4特别代表氢原子,则其中n和m为0或1的式1的1-芳基-2-芳氧基乙烷化合物, 卤素原子,羟基或烷氧基,特别是R5代表氢原子,羟基,烷基,烷氧基,氨基或硝基,用于抗衰老和/或脱色素和/或抗炎和/或伤口的化妆品组合物中, 愈合护理
摘要:
The invention relates to novel polyphenol-quinonoid polymer derivatives, methods of synthesizing, compositions and uses thereof. In particular, the invention relates to polyphenol-quinonoid polymer derivatives useful in the treatment of viral infections, notably conditions caused by retroviruses such as human immunodeficiency virus (HIV).
摘要:
An aryl composition includes aryl ether oligomers. These compositions may be prepared by reaction of one or more dihalobenzenes with one or more dihydroxybenzenes by an Ullman ether reaction. The oligomers may have two or more benzene rings and include terminal halogen, e.g., bromine (Br), or hydroxyl (OH) groups. These oligomers may be brominated to form flame retardant compositions for thermoplastic polymers.
摘要:
A method for producing an optically active alcohol compound comprising reacting a cyclic ether compound with a phenol compound in the presence of an asymmetric complex obtained by reacting an optically active metal complex represented by the formula (1):
wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are the same or different and each independently represent a hydrogen atom, an alkyl group or the like; one of R 9 and R 10 is a hydrogen group and the other is a substituted or unsubstituted phenyl group or the like; Q represents a single bond, a C1-C4 alkylene group or the like; M represents a metal ion; and when an ionic valency of the metal ion is same as a coordination number of a ligand, A is nonexistent, and when the above-mentioned ionic valency is different from the coordination number, and A represents a counter ion or a ligand, with a metal sulfonate.
摘要:
Process for preparing alkoxy- and aryloxy-phenols, comprising oxidizing the ketone of formula (I) with peracids to give the corresponding ester of formula (II) which is then hydrolysed to give the corresponding aryloxy- or alkoxy-phenol.
摘要:
Selected perfluoroalkyl substituted phenols containing more than one benzene ring are novel, and are useful as stain resist additives for synthetic polymer fibers, especially polyamides.