PROCESS:A halomethylcyclohexane of formula II (X is halogen) and an m-hydroxybenzoic acid amide derivative of formula III are heated at 50 deg.C- the refluxing temperature in the absence or presence of an organic solvent, e.g. toluene, with a dehydrohalogenating agent, e.g. Na2CO3, to ...
C6H5COOCH2CH3+C6H5CH2OH[Na2CO3]→C6H5COOCH2C6H5+CH3CH2OH MSDS 信息:苯甲酸苄酯(120-51-4).msds 用途三:GB 2760—1996规定为允许使用的食用香料。作定香剂用。主要用于配制洋李、樱桃等浆果型香精。 参考质量标准二:指标名称 QB 1 780—93 含量 ≥99.0% 酸值(OT-4) ≤1.0 折射率(n D 20 ...
Method provides increase of benzoic acid yield from 12.2 to 91.5% output of process is increased from 0.023 to 0.41 kg/l x h. EFFECT: increased output of process, increased yield of product.KULIKOV V.M.MASHIN V.N.BOGOLEPOVA E.I.
PREPARATION:A 2-phenoxyethyl halide shown by the formula II (Y is halogen) is reacted with a metahydroxybenzoic acid amide derivative shown by the formula III in the absence of a solvent or in an inert organic solvent such as toluene, xylene, etc. in the presence of a dehydrohalogenating...
annelationaromatic carboxylatesC−H activationrhodiumIn the presence of a [Cp*RhCl2]2 catalyst, the Lewis acid In(OTf)3 and the mild base Na2CO3, aromatic carboxylates and α,β澆爑rated ketones undergo a unique hydroarylation/Claisen/retro〤laisen process to give the corresponding indanone...
annelationaromatic carboxylatesC−H activationrhodiumIn the presence of a [Cp*RhCl2]2 catalyst, the Lewis acid In(OTf)3, and the mild base Na2CO3, aromatic carboxylates and α,β‐unsaturated ketones undergo a unique hydroarylation/Claisen/retro‐Claisen process to give the corresponding ...
rhodiumIn the presence of a [Cp*RhCl2](2) catalyst, the Lewis acid In(OTf)(3), and the mild base Na2CO3, aromatic carboxylates and ,-unsaturated ketones undergo a unique hydroarylation/Claisen/retro-Claisen process to give the corresponding indanones. In this carboxylate-directed ortho-C-H...
PREPARATION:A 2-phenoxyethyl halide shown by the formula II (Y is halogen) is reacted with a metahydroxybenzoic acid amide derivative shown by the formula III in the absence of a solvent or in an inert organic solvent such as toluene, xylene, etc. in the presence of a dehydrohalogenating...
Their oxidation with m‐chloroperbenzoic acid (m‐CPBA) was investigated either in the presence or in the absence of Na2CO3. The following conclusions were reached. (1) Oxidation in the presence of Na2CO3affords the corresponding epoxides (4) in moderate to excellent yields. (2) Oxidation in ...
in the presence of a dehydrohalogenating agent (e.g. Na2CO3, K2CO3, etc.) under heating. The compound of formulaIis applied at a rate of 1-2,000g/10 a in the form of wettable powder, emulsifiable concentrate, etc. containing the compound in an amount of 0.1-50%.ISOGAWA TAKAYUKI...