1382600-78-3Relevant articles and documents
2-bromine-5-nitro-1,2,3,4-tetrahydro-1,4-methano-naphthalene-9-phenol and preparation method thereof
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, (2017/08/28)
The invention provides a chemical compound which can serve as an intermediate for benzovindiflupyr synthesis. The chemical compound is 2-bromine-5-nitro-1,2,3,4-tetrahydro-1,4-methano-naphthalene-9-phenol with the chemical formula as shown in formula (IV) in the specification. The invention further provides a method for preparing the chemical compound, 2-bromine-5-nitro-1,2,3,4-tetrahydro-1,4-methano-naphthalene-9-phenol. The method comprises: a chemical compound, [2,3]-epoxy-5-nitro-1,2,3,4-tetrahydro-1,4-methano-naphthalene, as shown in formula (III) reacts in a hydrobromic acid aqueous solution at 20 DEG C, and the chemical compound as shown in formula (IV) is prepared. The invention finds a novel method for producing a key intermediate for benzovindiflupyr and a preparation method thereof, thereby enabling the route for benzovindiflupyr synthesis to be more reasonable.
PROCESS FOR THE STEREOSELECTIVE PREPARATION OF A PYRAZOLE CARBOXAMIDE
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Page/Page column 29; 30, (2013/08/28)
The present invention relates to a process for the enantioselective preparation of 3-difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid ((1S,4R)-9-dichloromethylene-1,2,3,4- tetrahydro-1,4-methano-naphthalen-5-yl)-amide of formula Ib.