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公开(公告)号：US06545186B2
公开(公告)日：2003-04-08
申请号：US10012539
申请日：2001-12-12
IPC分类号： C07C4500
CPC分类号： C07C45/83 , C07C45/40 , C07C45/80 , C07C45/82 , C07C49/433
摘要： Improved, safe process for the purification of ketones obtained by ozonolysis and subsequent reduction of the corresponding terpenes, in which, after the ozonolysis and reduction of acyclic mono-, bi- or tricyclic terpenes with ozonizable double bonds, converting the resulting corresponding crude ketone into a high-purity ketone by means of steam distillation at atmospheric pressure or at reduced pressure, extraction of the steam distillate and subsequent distillation.
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公开(公告)号：US07858381B2
公开(公告)日：2010-12-28
申请号：US11475086
申请日：2006-06-27
IPC分类号： G01N33/00
CPC分类号： C07C41/56 , C07C45/43 , C07C45/515 , C07C45/81 , C07C45/85 , Y10T436/200833 , C07C47/544 , C07C43/307
摘要： Improved process for preparing high-purity, halogen-free o-phthalaldehyde, in which a) tetrahalo-o-xylene is hydrolyzed at a temperature of 155-160° C. and a pressure of from 2 to 5 bar, where appropriate in the presence of a phase-transfer catalyst, to o-phthalaldehyde, which b) is converted in an acidic alcoholic solution at a temperature of from 0 to the reflux temperature into the corresponding dialkoxyphthalane and, subsequently, c) an acetal cleavage is effected by acid hydrolysis at a pH >1.5 to pH 7, resulting in high-purity, halogen-free o-phthalaldehyde.
摘要翻译： 改进的制备高纯度无卤邻苯二甲醛的方法，其中a）四卤代邻二甲苯在155-160℃的温度和2至5巴的压力下水解， 相转移催化剂存在于邻苯二甲醛中，b）在酸性醇溶液中在0至回流温度下转化成相应的二烷氧基苯烷，然后c）通过酸进行缩醛裂解 在pH> 1.5至pH7下水解，得到高纯度，无卤素的邻苯二甲醛。
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公开(公告)号：US06486327B1
公开(公告)日：2002-11-26
申请号：US10129189
申请日：2002-05-02
IPC分类号： C07D21304
CPC分类号： C07D213/30
摘要： The invention relates to a method for producing hydroxymethylpyridines from the corresponding vinylpyridines by means of ozonisation in an alcohol as solvent and by means of hydrogenation of the peroxide-containing solution produced thereby, in the presence of a hydrogenation catalyst The hydrogenation solution is adjusted to a pH value of 10 to 14 by adding a base and the alcohol is distilled off and the desired hydroxymethylpyridine is isolated in high purity by extracting with an organic solvent and by means of subsequent distillative purification.
摘要翻译： 本发明涉及通过在醇作为溶剂中的臭氧化和通过在由氢化催化剂的存在下氢化产生的含过氧化物的溶液从对应的乙烯基吡啶生产羟甲基吡啶的方法。将氢化溶液调节至 通过加入碱将pH值降至10至14，并蒸除醇，通过用有机溶剂萃取并通过随后的蒸馏纯化将所需的羟甲基吡啶分离成高纯度。
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公开(公告)号：US20060293542A1
公开(公告)日：2006-12-28
申请号：US11475086
申请日：2006-06-27
IPC分类号： C07C45/00
CPC分类号： C07C41/56 , C07C45/43 , C07C45/515 , C07C45/81 , C07C45/85 , Y10T436/200833 , C07C47/544 , C07C43/307
摘要： Improved process for preparing high-purity, halogen-free o-phthalaldehyde, in which a) tetrahalo-o-xylene is hydrolyzed at a temperature of 155-160° C. and a pressure of from 2 to 5 bar, where appropriate in the presence of a phase-transfer catalyst, to o-phthalaldehyde, which b) is converted in an acidic alcoholic solution at a temperature of from 0 to the reflux temperature into the corresponding dialkoxyphthalane and, subsequently, c) an acetal cleavage is effected by acid hydrolysis at a pH >1.5 to pH 7, resulting in high-purity, halogen-free o-phthalaldehyde.
摘要翻译： 改进的制备高纯度无卤邻苯二甲醛的方法，其中a）四卤代邻二甲苯在155-160℃的温度和2至5巴的压力下水解， 相转移催化剂存在于邻苯二甲醛中，b）在酸性醇溶液中在0至回流温度下转化成相应的二烷氧基苯烷，然后c）通过酸进行缩醛裂解 在pH> 1.5至pH7下水解，得到高纯度，无卤素的邻苯二甲醛。
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公开(公告)号：US06486358B1
公开(公告)日：2002-11-26
申请号：US10144887
申请日：2002-05-15
IPC分类号： C07C4500
CPC分类号： C07C45/78 , C07C45/82 , C07C47/544
摘要： Improved process for the purification and formulation of o-phthalaldehyde in which crude o-phthalaldehyde, obtained by cleavage of an acetal of o-phthalaldehyde by means of acidic hydrolysis, is, optionally by adding an aqueous basic solution, adjusted to a pH of from 1 to 8, and then, after phase separation has taken place, water is distilled off from the phase which contains the aldehyde with very short thermal stress of less than 1 minute at a pressure of between 100 mbar and atmospheric pressure and a temperature of from room temperature to 180° C. on a thin-layer overhead evaporator and o-phthalaldehyde is then stripped off from the distillation bottom which remains with very short thermal stress of less than 1 minute at a pressure of from 0.5 to 50 mbar and a jacket temperature of from 80 to 80° C. via a thin-layer evaporator and the resulting o-phthalaldehyde melt is pelleted at atmospheric pressure and a temperature of from 60 to 80° C., giving pale yellow o-phthalaldehyde in high purity and storage-stable form.
摘要翻译： 用于纯化和制备邻苯二甲醛的改进方法，其中通过酸性水解裂解邻苯二甲醛的缩醛获得的粗邻苯二甲醛，任选地通过加入碱性水溶液，调节至pH为 1至8，然后在相分离发生后，在100 mbar和大气压之间的压力下，从包含醛的相中蒸出水，其热应力小于1分钟，热应力非常短 然后在薄层塔顶蒸发器上室温至180℃，然后从蒸馏塔底部除去邻苯二甲醛，蒸馏塔底部保持非常短的热应力，压力为0.5至50毫巴，夹套小于1分钟 通过薄层蒸发器温度为80至80℃，并将所得的邻苯二甲醛熔体在大气压和60至80℃的温度下沉淀，得到淡黄色邻苯二甲醛 n高纯度和储存稳定的形式。
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公开(公告)号：US5874637A
公开(公告)日：1999-02-23
申请号：US960618
申请日：1997-10-29
摘要： Process for the purification of o-phthalaldehyde in which an alcoholic solution containing the crude, unpurified o-phthalaldehyde is adjusted to a pH between 0 and 3 at a temperature between 0.degree. and 60.degree. C., then an alkaline solution is added, and the corresponding dialkoxyphthalan is extracted from the organic phase and purified by distillation and, when required, converted into the purified o-phthalaldehyde by hydrolysis.
摘要翻译： 在0℃〜60℃的温度下将含有粗纯非邻苯二甲醛的醇溶液调节至0〜3的邻苯二甲醛的纯化方法，然后加入碱溶液， 从有机相中提取出相应的二氧代邻苯二甲酸并通过蒸馏纯化，并且当需要时通过水解转化成纯化的邻苯二甲醛。
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