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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0021552 (1998-02-10) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 439 |
A reaction for eliminating a functional group alpha to a carbonyl group. The reaction can be used to dehydrate a compound having an alcohol group alpha to a carbonyl group by reacting the compound in a non-aqueous non-polar solvent in the presence of an effective amount of a transition metal salt, s
A reaction for eliminating a functional group alpha to a carbonyl group. The reaction can be used to dehydrate a compound having an alcohol group alpha to a carbonyl group by reacting the compound in a non-aqueous non-polar solvent in the presence of an effective amount of a transition metal salt, such as zinc chloride, such that the alcohol group is dehydrated. This Nohr-MacDonald Elimination Reaction produces a light stable compound, which can be added to compositions for light stabilization of a colorant. The modified compound may be combined with a wave-length selective sensitizer.
[What is claimed is:] [1.] rein:R.sub.1 is a hydrogen, alkyl, alkenyl, cycloalkyl or an aryl group;R.sub.2 is a hydrogen, alkyl, alkenyl, cycloalkyl or an aryl group; andR.sub.3 is a substituted aryl which substitution contains a heterocyclic group.
[What is claimed is:] [1.] rein:R.sub.1 is a hydrogen, alkyl, alkenyl, cycloalkyl or an aryl group;R.sub.2 is a hydrogen, alkyl, alkenyl, cycloalkyl or an aryl group; andR.sub.3 is a substituted aryl which substitution contains a heterocyclic group.
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