toluene-2,4-dicarbamic acid diphenyl ester | 4223-24-9

• 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: toluene-2,4-dicarbamic acid diphenyl ester
• 英文别名: toluylene-2,4-bis(phenyl)carbamate；N,N'-(4-methyl-m-phenylene)-bis-carbamic acid diphenyl ester；N,N'-(4-Methyl-m-phenylen)-bis-carbamidsaeure-diphenylester；(asymm.-m-Toluylen)-bis-carbamidsaeurephenylester；4-methyl-1,3-phenylene-biscarbamic acid, diphenyl ester；diphenyl (4-methyl-1,3-phenylene)biscarbamate；N,N'-Bis(phenoxycarbonyl)-4-methyl-1,3-phenylenediamine；phenyl N-[2-methyl-5-(phenoxycarbonylamino)phenyl]carbamate
• CAS: 4223-24-9
• 化学式: C₂₁H₁₈N₂O₄
• 分子量: 362.385
• InChiKey: HRHQJVCYJQPJQA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  27
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.05
• 拓扑面积：
  76.7
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  toluene-2,4-dicarbamic acid diphenyl ester 以 邻二氯苯 为溶剂， 160.0~250.0 ℃ 、800.01 kPa 条件下， 以84%的产率得到甲苯-2,4-二异氰酸酯
  参考文献：
  名称：

  METHOD FOR PRODUCING CARBAMATE AND METHOD FOR PRODUCING ISOCYANATE

  摘要：

  本发明提供了一种生产碳酸酯的方法，包括以下步骤：(1)通过使用每个分子至少含有一个一次氨基团的有机初级胺和碳酸气体或碳酸衍生物中选择的至少一种化合物，在低于尿素键热解温度的温度下，生产具有尿素键的化合物(A)；以及(2)将化合物(A)与碳酸酯反应以生产碳酸酯。

  公开号：

  US20210179548A1
• 作为产物：
  描述：

  2,4-二氨基甲苯 以 4-十二烷基苯酚 为溶剂， 反应 26280.0h， 生成 toluene-2,4-dicarbamic acid diphenyl ester
  参考文献：
  名称：

  PROCESS FOR THE PREPARATION OF N-SUBSTITUTED CARBAMIC ACID ESTER AND PROCESS FOR THE PREPARATION OF ISOCYANATE USING THE N-SUBSTITUTED CARBAMIC ACID ESTER

  摘要：

  公开号：

  EP2322504B9

文献信息

• PROCESS FOR PRODUCING ISOCYANATES USING DIARYL CARBONATE
  申请人：Shinohata Masaaki

  公开号：US20110054211A1

  公开（公告）日：2011-03-03

  An object of the present invention is to provide a process that enables isocyanate to be produced stably over a long period of time and at high yield without encountering problems of the prior art during production of isocyanate without using phosgene. The present invention provides an isocyanate production process including the steps of: obtaining a reaction mixture containing an aryl carbamate having an aryl group originating in a diaryl carbonate, an aromatic hydroxy compound originating in a diaryl carbonate, and a diaryl carbonate, by reacting a diaryl carbonate and an amine compound in the presence of a reaction solvent in the form of an aromatic hydroxy compound; transferring the reaction mixture to a thermal decomposition reaction vessel; and obtaining isocyanate by applying the aryl carbamate to a thermal decomposition reaction, wherein the reaction vessel in which the reaction between the diaryl carbonate and the amine compound is carried out and the thermal decomposition reaction vessel for the aryl carbamate are different.

  本发明的一个目的是提供一种能够在生产异氰酸酯时在长时间内稳定地且高产率地生产异氰酸酯的方法，而不使用光气时遇到先前技术问题的方法。本发明提供了一种异氰酸酯生产方法，包括以下步骤：通过在反应溶剂形式的芳香羟基化合物存在下，通过反应二芳基碳酸酯和胺化合物得到含有源自二芳基碳酸酯的芳基碳酸酯、源自二芳基碳酸酯的芳香羟基化合物和二芳基碳酸酯的反应混合物；将反应混合物转移至热分解反应容器；通过将芳基碳酸酯应用于热分解反应来获得异氰酸酯，其中进行二芳基碳酸酯和胺化合物之间的反应的反应容器和用于芳基碳酸酯的热分解反应的反应容器是不同的。
• ISOCYANATE PRODUCTION METHOD
  申请人：ASAHI KASEI KABUSHIKI KAISHA

  公开号：US20200115327A1

  公开（公告）日：2020-04-16

  An isocyanate production method according to the present invention is a method in which an isocyanate is produced by subjecting a carbamate to thermal decomposition, and includes: a step of preparing a mixture liquid containing the carbamate, an inactive solvent and a polyisocyanate compound; a step of conducting a thermal decomposition reaction of the carbamate by continuously introducing the mixture liquid into a thermal decomposition reactor; a step of collecting a low-boiling decomposition product by continuously extracting the low-boiling decomposition product in a gaseous state from the reactor, the low-boiling decomposition product having a boiling point lower than the polyisocyanate compound; and a step of collecting a high-boiling component by continuously extracting, from the reactor, a liquid phase component which is not collected in a gaseous state at the step of collecting the low-boiling decomposition product.

  根据本发明的一种异氰酸酯生产方法是一种通过将氨基甲酸酯经受热分解而生产异氰酸酯的方法，包括：准备含有氨基甲酸酯、无活性溶剂和多异氰酸酯化合物的混合液的步骤；通过持续将混合液引入热分解反应器对氨基甲酸酯进行热分解反应的步骤；通过持续从反应器中以气态形式提取低沸点分解产物的步骤，所述低沸点分解产物的沸点低于多异氰酸酯化合物；通过从反应器中持续提取未在收集低沸点分解产物的步骤中以气态形式收集的液相组分的步骤来收集高沸点组分。
• Method for Producing Carbonyl Compund
  申请人：Shinohata Masaaki

  公开号：US20130178645A1

  公开（公告）日：2013-07-11

  A method for producing a carbonyl compound of the present invention comprises a step (X) of reacting a specific compound having a urea bond with a carbonic acid derivative having a carbonyl group (—C(═O)—) under heating at a temperature equal to or higher than the thermal dissociation temperature of the urea bond to obtain the carbonyl compound.

  本发明的生产羰基化合物的方法包括以下步骤（X）：将具有脲键的特定化合物与具有羰基（—C(═O)—）的碳酸衍生物在温度高于或等于脲键热解温度的条件下加热反应，以获得所述羰基化合物。
• Reaction of aromatic diamines with diphenylcarbonate catalyzed by phosphorous acids: a new clean synthetic route to mono- and dicarbamates
  作者：Michele Aresta、Angela Dibenedetto、Eugenio Quaranta

  DOI：10.1016/s0040-4020(98)00873-4

  日期：1998.11

  In the presence of organophosphorus acids [Ph2P(O)OH, (PhO)2P(O)OH, (BuO)2P(O)OH, (BuO)P(O)(OH)2], aromatic diamines, such as 4,4′-methylendianiline (MDA) or 2,4-diaminotoluene (TDA), react with diphenylcarbonate (DPC) to afford in a very selective way mono- and dicarbamate phenyl esters. The carbamation process is strongly influenced by the temperature and solvent. The influence of both these factors

  在有机磷酸[Ph 2 P（O）OH，（PhO）2 P（O）OH，（BuO）2 P（O）OH，（BuO）P（O）（OH）2 ]的存在下，芳族二胺，例如4,4'-甲基二苯胺（MDA）或2,4-二氨基甲苯（TDA）与碳酸二苯酯（DPC）反应，以非常选择性的方式提供单氨基甲酸酯和二氨基甲酸酯苯基酯。氨基甲酸酯化过程受温度和溶剂的强烈影响。已经研究了这两个因素对氨基甲酸酯收率和选择性的影响，我们在本研究中介绍了单氨基甲酸酯和二氨基甲酸酯的形成动力学。
• NOVEL COMPOUND FOR COLOR-PRODUCING COMPOSITION, AND RECORDING MATERIAL
  申请人：KABASHIMA Kazuo

  公开号：US20100105941A1

  公开（公告）日：2010-04-29

  A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula: 10≧( A+B )≧3 wherein each of A and B is an integer of 1 or more.

  一种尿素-脲化合物，其分子结构中具有一种或多种尿素基团和一种或多种脲基团，其中所述尿素基团（A）的数量和所述脲基团（B）的数量满足以下数值公式：10≥（A+B）≥3，其中A和B均为1或更多的整数。