首页>
外国专利>
Separation of glyoxal diacetal from a crude mixture containing mono- and di-acetal, for use e.g. in organic synthesis, involves counter-current liquid-liquid extraction with an immiscible solvent, e.g. cyclohexane
Separation of glyoxal diacetal from a crude mixture containing mono- and di-acetal, for use e.g. in organic synthesis, involves counter-current liquid-liquid extraction with an immiscible solvent, e.g. cyclohexane
展开▼
机译:从包含单缩醛和二缩醛的粗混合物中分离乙二醛二缩醛,例如在有机合成中,涉及用不混溶的溶剂,例如Na 2 SO 4逆流液-液萃取。环己烷
展开▼
页面导航
摘要
著录项
相似文献
摘要
Diacetals of glyoxal (I) are separated from mixtures containing (I) and the corresponding mono-acetal (II) by counter-current liquid-liquid extraction with a solvent which is immiscible in the reaction mixture, to give an upper phase containing (I). A method for separating glyoxal diacetals of formula (RO) 2CH-CH(OR) 2(I) from a crude mixture containing (I) and a monoacetal of formula (II) involves counter-current liquid/liquid extraction with a solvent which is immiscible with the reaction mixture, to give an upper phase containing (I) and a lower phase containing the other components of the mixture. (RO) 2CH-CHO (II) R : 1-4C alkyl.
展开▼