YAMAUCHI Takayoshi Nissei Chemical Inc., Director, 取締役
HASHIMOTO Keiji Osaka Municipal Technical Research Institute, Senior Researcher, 副主幹
OHE Kouichi Graduate School of Engineering, Kyoto University Associate Professor, 工学研究科, 助教授 (90213636)
伊藤 修 京都大学, 工学研究科, 助手 (10026023)
|Budget Amount *help
¥2,500,000 (Direct Cost : ¥2,500,000)
Fiscal Year 1996 : ¥2,500,000 (Direct Cost : ¥2,500,000)
We have carried out the catalytic use of metal cation-exchanged montmorillonite (M^<n+>mont), a modified natural clay with a layr structure, and metal cationexchanged fluorotetrasilicic mica (M^<n+>-TSM), a synthetic clay with a layr structure, for the following organic unit reactions : (1) Friedel-Crafts alkylation of phenol with 4-hydroxybutan-2-one to produce 4- (4-hydroxyphenyl) butan-2-one (raspbery ketone), (2) rearrangement of alkyl phenyl ethers to the corresponding alkylphenols, (3) aromatic alkylation of phenol with aldehydes and ketones to produce the corresponding gem-bis (hydroxyphenyl) alkanes (bisphenols) and alkylphenols, respectively, (4) a facile and an almost quantitative substrateselective acetalization, (5) alkane oxidation with aqueous tert-butyl hydroperoxide, (6) Prins reaction of stirenes with aldehydes using a clay as a Bronsted acid, and (7) inter-and intramolecular carbonyl-ene reaction using a clay as a Lewis acidunder similar condition to that of Prins reaction. In almost all cases, the clay catalyst can be regenerated and reused for several times after filtration, washing, and drying.