摘要:
The invention relates to a new compound (3-Vinylphenyl)phenylmethane,and a method for producing α-(3-benzoylphenyl)propionic acid of ketoprofen without difficulty at low cost and in a high yield. The method comprises the steps of: reacting (3-vinylphenyl)phenylmethane with carbon monoxide and hydrogen, water or lower alcohol in the presence of a transition metal carbonylation catalyst to form α-(3-benzylphenyl)propionic acid derivative, and when the thus obtained compound is an aldehyde, oxidizing methylene group and formyl group of the compound simultaneously or sequentially, or when the obtained compound is an acid or its ester, oxidizing the methylene group of the compound, and if necessary performing a hydrolysis step.
摘要:
This invention relates to a method for manufacturing aromatic compounds having the following formula (II) comprising the step of reacting an unsaturated aromatic compound having the following formula (I) with an aryl compound containing an iodosyl group or the salt thereof within a temperature range of from -50 to 200 o C:
摘要:
New compounds, i.e.α-(3-(1-phenylethenyl)phenyl)propionic acid and its esters and a method for producing α-(3-benzoylphenyl)propionic acid which is prepared by oxidizing the former compound as an intermediate. The method is characterized by the easiness in operation, the low cost and the high purity of the product.
摘要:
A method for producing efficiently a highly pure 1-(m-ethylphenyl)-1-phenylethane or m-ethylphenylphenylmethane which are used as the starting materials for preparing medicines and other organic compounds. The method comprises the step of reacting a diaryl compound with benzene or alkylbenzene in the presence of an acid catalyst selected from the group consisting of AlCl₃, AlBr₃, HF·BF₃ complex and Y-type zeolites.
摘要:
1-(3-Vinylphenyl)-1-phenylethylene can be prepared by - dehydrating 1-(3-vinylphenyl)-1-phenylethyl alcohol - dehydrogenating 1-(3-vinylphenyl)-1-phenylethylene; this compound is prepared by a grignard synthesis between (1-chloroethyl)benzene and 3-vinylphenylmagnesium bromide.