发明名称 |
Process for the preparation of dicyclopentylene [2,2'-bis(4-alkyl-6-t-butylphenols)] |
摘要 |
The invention concerns a process for the preparation of dicyclopentylene [2,2'-bis(4-alkyl-6-t-butylphenols)] of the formula I <IMAGE> (I) wherein R1 is tertiary butyl and R2 is methyl or ethyl, by the reaction of 1.5 to 2.5 moles of a 4-alkyl-6-t-butyl-phenol of the formula II <IMAGE> wherein R1 and R2 are as defined above, with 0.8 to 1.2 moles dicyclopentadiene at a temperature between 20 DEG and 120 DEG C. in the presence of an organic solvent and borontrifluoride or a complex thereof as catalyst, characterised by employment of specially selected solvents and reaction under practically anhydrous conditions.
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申请公布号 |
US4301311(A) |
申请公布日期 |
1981.11.17 |
申请号 |
US19790059253 |
申请日期 |
1979.07.20 |
申请人 |
CHEMISCHE WERKE LOWI GMBH |
发明人 |
MUELLER, ROLF;HARTMANN, WERNER;KUCA, ZDENEK |
分类号 |
C07C37/14;(IPC1-7):C07C37/14 |
主分类号 |
C07C37/14 |
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地址 |
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