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Synthesis of chrome-complexed dye developers in the presence of weakly basic anion exchange resins
Synthesis of chrome-complexed dye developers in the presence of weakly basic anion exchange resins
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机译：在弱碱性阴离子交换树脂存在下铬络合物染料显影剂的合成
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摘要
An improved method for preparing a compound of the formula: P P Where each R can be hydrogen, an alkyl substituent, preferably having from 1-6 carbon atoms or an alkoxy substituent preferably having from 1-6 carbon atoms and each R.sup.1 is hydrogen or an alkyl or an alkanol group. R.sup.2 is an alkylene radical having from 1-6 carbon atoms and X represents the atoms to complete a cyclopentyl or cyclohexyl ring.PP Metal complexed dyes of the above formula are especially useful in the preparation of photographic image patterns. PPThe improved feature of the method presented involves the preparation of compounds of formula 1 in the presence of weakly basic anion exchange resins to obtain high yields of especially high purity products.
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机译：一种制备下式化合物的改进方法：其中每个R可以是氢，优选具有1-6个碳原子的烷基取代基或优选具有1-6个碳原子的烷氧基取代基，并且R 1是氢或烷基或链烷醇基。 R 2是具有1-6个碳原子的亚烷基，X代表完成环戊基或环己基环的原子。上式的金属络合染料特别适用于照相照相品的制备。所示方法的改进特征涉及在弱碱性阴离子交换树脂存在下制备式1化合物以获得高产率的特别是高纯度的产物。
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