41747-24-4Relevant academic research and scientific papers
PROCESS FOR THE PREPARATION OF DIHALOBENZOPHENONES, NEW CHEMICALS USEFUL FOR ITS IMPLEMENTATION AND METHODS FOR PREPARING SAID CHEMICALS
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Page/Page column 10-11, (2020/12/01)
The invention relates to new compounds of formulae (IV), wherein X represents a halogen atom selected from the group consisting of fluorine, chlorine, bromine and iodine, said compounds being useful as precursors and/or intermediates for the preparation of 4,4'dihalobenzophenones of formula (I), wherein X is as defined above.
Fluorinated carbocylic compounds
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, (2008/06/13)
Fluoro-substituted carbocyclic compounds are prepared by (A) reacting hydrogen fluoride with a chloro-cyclohexenyl compound of the formula STR1 where R1 and R2 are independently selected from the group consisting of --H, --CH2 OH, --COF, --COCl, --CF3, --CN, STR2 and --CH2 R, where R is --H or alkyl of 1-4 carbon atoms, to form a gem-dihalocyclohexane compound of the formula STR3 where X is chlorine and R1 and R2 are as defined above, (B) dehydrohalogenating the gem-dihalocyclohexane compound in the vapor phase to form a fluoro-cyclohexenyl compound of the formula STR4 (C) contacting the fluoro-cyclohexenyl compound, in the vapor phase, with a dehydrogenation catalyst to form a fluoro-substituted aromatic compound of the formula STR5
