发明名称 |
MANUFACTURE OF (BETA)-IONONES |
摘要 |
<p>1340211 #-Ionones BADISCHE ANILIN- & SODA-FABRIK AG 12 May 1971 [13 May 1970 10 April 1971] 14378/71 Heading C2C #-Ionones of formula in which R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are hydrogen or methyl are prepared by oyclizing a pseudo-ionone of formula in which X is or and Y is -C(CH 3 ) = CH- with sulphuric acid at a temperature of from -30‹ to +20‹ C. in the presence of a mixture of an optionally chlorinated liquid hydrocarbon boiling at a temperature below 200‹ C. at atmospheric pressure and a C 1 -C 6 alkanol, the molar ratio of pseudoionone to alcohol being from 1 : 0À05 to 1 : 5 and that of pseudoionone to alcohol being from 1 : 5 to 1 : 15 and the sulphuric acid used having a stength of from 90 to 98%.</p> |
申请公布号 |
CA962691(A) |
申请公布日期 |
1975.02.11 |
申请号 |
CA19710112631 |
申请日期 |
1971.05.10 |
申请人 |
BADISCHE ANILIN- & SODA-FABRIK AKTIENGESELLSCHAFT |
发明人 |
HOFFMANN, WERNER;FISCHER, ROMAN |
分类号 |
C07C;C07C45/00;C07C403/00 |
主分类号 |
C07C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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