Mitsui Chemicals, Inc.

Junko Naruse

Hidetoshi Hayashi

Kouki Fukumura

Hiroshi Sonoda

Teruyuki Nagata

Hideaki Oikawa

Kenichi Goto

Tsuyoshi Yasutake

Ken'ichi Goto

Takashi Shimaoka

Toshio Kitashima

Hideki Umetani

Kazunari Okada

Akira Takahashi

Fluorination agent and preparation and use of same

Process for producing fluorinated silicon compound

A preparation process of a fluorine substituted aromatic compound comprising reacting an alkali metal or alkali earth metal salt of an aromatic compound having a hydroxy group with an organic fluorinating agent is disclosed. As a representative fluorinating agent, a bis-dialkylamino-difluoromethane compound, for example, 2,2&prime;-difluoro-1,3-dimethylimidazolidine, is exemplified. According to the process, an industrially useful fluorinated aromatic compound, for example, a fluorobenzene, a fluorine substituted benzophenone, a fluorine substituted diarylsulfone can be prepared with ease in economy without specific equipment.

Preparation process of fluorine substituted aromatic compound

The invention has disclosed a trifluoroacetoxylation agent and a preparation process of the agent, which is safe and ease to handle, very useful in industry, and represented by the formula (1);

Tetraalkylfluoroformamidinium trifluoroacetate and preparation process of same

A preparation process of an acetylene derivative comprising reacting a compound having a skeleton represented by the formula (1): ##STR1## in the molecular formula with a compound represented by the formula (2): ##STR2## wherein R.sup.1, R.sup.2 R.sup.3 and R.sup.4 are individually an alkyl group having 1 to 6 carbon atoms and can be the same or different, R.sup.1 and R.sup.3 can bond each other to form a ring, and R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 can be bond each other to form one or two heterocyclic rings: or with a compound represented by the formula (3): wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same as in the formula (2), and X.sub.1 is a ##STR3## chlorine, bromine or iodine atom.

Process for preparing acetylene derivative from a ketone compound

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Fukuoka, Japan

Junko Naruse