oxalic acid di-o-tolyl ester | 61417-93-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: oxalic acid di-o-tolyl ester
• 英文别名: Oxalsaeure-di-o-tolylester；Di-o-tolyl-oxalat；ethanedioic acid, bis(2-methylphenyl) ester；Bis(2-methylphenyl) oxalate
• CAS: 61417-93-4
• 化学式: C₁₆H₁₄O₄
• 分子量: 270.285
• InChiKey: WMFBPFYGEKLQFO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  草酸 、 邻甲酚 在 三氯氧磷 作用下， 生成 oxalic acid di-o-tolyl ester
  参考文献：
  名称：

  Bischoff; v. Hedenstroem, Chemische Berichte, 1902, vol. 35, p. 3441

  摘要：

  DOI：

文献信息

• PROCESS FOR PREPARING DIARYL OXALATE
  申请人：Tanaka Shuji

  公开号：US20120296063A1

  公开（公告）日：2012-11-22

  Disclosed is a process for preparing a diaryl oxalate which comprises the step of transesterifying a dialkyl oxalate or/and an alkylaryl oxalate with an aryl alcohol in the presence of a tetra(aryloxy)titanium as a catalyst, wherein the tetra(aryloxy)titanium is fed into a reaction system of the transesterification as an aryl alcohol solution of the tetra(aryloxy)titanium which is prepared by reacting a tetraalkoxy titanium and an excess amount of the aryl alcohol and removing a by-producing alkyl alcohol.

  揭示了一种制备二芳基草酸酯的方法，包括在四(芳氧基)钛存在下，通过将二烷基草酸酯和/或烷基芳基草酸酯与芳基醇进行酯交换的步骤，其中四(芳氧基)钛以芳基醇溶液的形式加入酯交换的反应系统中，该芳基醇溶液是通过将四烷氧基钛和过量的芳基醇反应制备的，并去除生成的副产物烷基醇。
• Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct
  申请人：UBE INDUSTRIES, LTD.

  公开号：EP0776882A1

  公开（公告）日：1997-06-04

  A novel crystalline adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 and having a high purity is produced by melting a mixture containing diphenyl oxalate and phenol at a temperature of 100°C or more; cooling the melt to a temperature of less than 100°C to allow a resultant adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 to crystallize and deposit from the melt; and collecting the crystalline adduct, and is utilized to produce diphenyl oxalate with a high purity by melting the crystalline adduct to dissociate it into diphenyl oxalate and phenol, and evaporating away the dissociated phenol from the melt to collect the dissociated diphenyl oxalate.

  草酸二苯酯和苯酚的摩尔比为 1:2 且纯度很高的新型结晶加合物是通过以下方法制得的：在 100°C 或更高的温度下熔化含有草酸二苯酯和苯酚的混合物；将熔体冷却到低于 100°C 的温度，使摩尔比为 1:2 的草酸二苯酯和苯酚的加合物结晶并从熔体中沉积下来；收集结晶加合物，并通过熔化结晶加合物使其解离成草酸二苯酯，从而制得纯度很高的草酸二苯酯： 将结晶加合物熔化，使其离解为草酸二苯酯和苯酚，并从熔体中蒸发掉离解的苯酚，收集离解的草酸二苯酯，从而生产出高纯度的草酸二苯酯。
• Process for producing a diaryl carbonate
  申请人：UBE INDUSTRIES LIMITED

  公开号：EP0795539A1

  公开（公告）日：1997-09-17

  A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).

  高纯度碳酸二芳基酯的制备方法是：(A)在催化剂存在下，将(a)草酸二芳基酯和苯酚化合物或(b)草酸烷基芳基酯在一个或两个阶段中进行酯交换反应，制备草酸二芳基酯，同时从反应体系中除去副产物；(B)从步骤(A)的反应产物混合物中收集草酸二芳基酯；(C) 将草酸二芳基酯进行脱羰基反应，最好是在含磷化合物催化剂存在下进行，以将草酸二芳基酯转化为相应的碳酸二芳基酯，同时从反应体系中除去由一氧化碳组成的反应副产物；以及 (D) 从步骤(C)的反应产物混合物中收集碳酸二芳基酯。
• PROCESS FOR PREPARING DIARYL ESTERS OF OXALIC ACID
  申请人：UBE INDUSTRIES, LTD.

  公开号：EP0814074A1

  公开（公告）日：1997-12-29

  The present invention relates to a process for producing a diaryl oxalate, characterized in that an alkylaryl oxalate is subjected to a disproportionation reaction in the presence of a disproportionation catalyst, thereby to produce a diaryl oxalate while removing a by-product comprising a dialkyl oxalate. The production process of the present invention is advantageous in that the kinds of the by-products are fewer than that in conventional production process for diaryl oxalate, and thus can be practically utilized in industry, and the diaryl oxalates such as diphenyl oxalate, produced by the production process of the present invention are very important industrial materials for producing chemical products such as carbamates.

  本发明涉及一种草酸二芳基酯的生产工艺，其特征在于在歧化催化剂存在下，对草酸烷基芳基酯进行歧化反应，从而生产草酸二芳基酯，同时除去由草酸二烷基酯组成的副产品。 本发明生产工艺的优点在于副产品的种类比传统草酸二芳基酯生产工艺少，因此可在工业中实际利用，而且本发明生产工艺生产的草酸二芳基酯，如草酸二苯酯，是生产氨基甲酸酯等化工产品的非常重要的工业原料。
• Process for producing diaryl carbonate
  申请人：UBE INDUSTRIES, LTD.

  公开号：EP0832872A1

  公开（公告）日：1998-04-01

  A high purity diaryl carbonate is produced with a high efficiency by reacting carbon monoxide with an alkyl nitrite and/or an alkyl alcohol; reacting the resultant dialkyl oxalate with a hydroxyaryl compound, for example, phenol; decarbonylating the resultant diaryl oxalate to produce a diaryl carbonate and carbon monoxide; and collecting the diaryl carbonate from the decarbonylation reaction product mixture, the carbon monoxide produced in the decabonylation step being optionally reused for the production of the dialkyl oxalate.

  将一氧化碳与亚硝酸烷基酯和/或烷基醇反应；将生成的草酸二烷基酯与羟基芳基化合物（例如苯酚）反应，可高效生产出高纯度碳酸二芳基酯；对生成的草酸二芳基酯进行脱羰基反应，生成碳酸二芳基酯和一氧化碳；从脱羰基反应产物混合物中收集碳酸二芳基酯，脱羰基步骤中生成的一氧化碳可选择重新用于生产草酸二烷基酯。