发明名称 |
3,4,5,6-Tetra:hydro-phthalic anhydride prepn. - by isomerism of 1,2,3,6-isomer with palladium catalyst and inorganic salt |
摘要 |
<p>anhydride (derivs.) of formula (I): (where R1 and R2 are each H or CH3) are produced in high yields and purity by isomerising the corresp. 1,2,3,6-tetra- hydro-phthalic anhydride (derivs.) in the presence of (a) a Pd catalyst and (b) an inorganic salt and/or a sulphur cpd. The salt may be the halide nitrate or phosphate of an alkali(ne earth) metal and the S cpd. may be (in)organic. (I) are useful as fungicides, herbicides, epoxy resin curing agents and condensants for polyesters.</p> |
申请公布号 |
FR2472568(A1) |
申请公布日期 |
1981.07.03 |
申请号 |
FR19790029364 |
申请日期 |
1979.11.29 |
申请人 |
NEW JAPAN CHEMICAL CO LTD |
发明人 |
SHOJI TANI ET KENJI NISHIO |
分类号 |
C07C51/567;(IPC1-7):07D307/89 |
主分类号 |
C07C51/567 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|