dimethyl 2,2-dimethyl-4-methylenepentanoate | 71674-93-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: dimethyl 2,2-dimethyl-4-methylenepentanoate
• 英文别名: dimethyl 4-methylpent-1-ene-2,4-dicarboxylate；Dimethyl 2,2-dimethyl-4-methylenepentanedioate；dimethyl 2,2-dimethyl-4-methylidenepentanedioate
• CAS: 71674-93-6
• 化学式: C₁₀H₁₆O₄
• 分子量: 200.235
• InChiKey: PIMMJVRSKGYDBZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  14
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  dimethyl 2,2-dimethyl-4-methylenepentanoate 在 platinum(IV) oxide 氢气 作用下， 以 甲醇 为溶剂， 生成 1,1,3-三甲基戊二酸
  参考文献：
  名称：

  Chemistry of Allene. IV. Carbonylation Reactions of Allene

  摘要：

  DOI：

  10.1021/jo01067a020
• 作为产物：
  描述：

  甲基丙烯酸甲酯 在 偶氮二异丁腈 、 bis[(difluoroboryl)dimethylglyoxymate]cobalt(II) bis(methanol) complex 作用下， 反应 6.0h， 以42%的产率得到dimethyl 2,2-dimethyl-4-methylenepentanoate
  参考文献：
  名称：

  催化链转移和阴离子聚合相结合的甲基丙烯酸立体嵌段共聚物

  摘要：

  描述了一种通过催化链转移聚合与阴离子聚合相结合的立体嵌段共聚物合成途径。催化链转移聚合（CCTP）已用于合成乙烯基封端的聚合物，在迈克尔加成α-硫代异丙基异丁酸酯后，用作大分子引发剂，用于甲基丙烯酸酯型单体的阴离子聚合。所得的聚合物主要由无规嵌段（源自自由基聚合）和更多等规或间规嵌段（源自阴离子聚合）组成。

  DOI：

  10.1021/ma2020535

文献信息

• DENTAL COMPOSITIONS COMPRISING ADDITION-FRAGMENTATION AGENTS
  申请人：Joly Guy D.

  公开号：US20160008234A1

  公开（公告）日：2016-01-14

  A curable dental composition comprising an addition-fragmentation agent and a curable dental resin is disclosed.

  揭示了一种可治愈的牙科组合物，包括一种加成-断裂剂和一种可治愈的牙科树脂。
• Polymer Materials With Unsaturated Transfer Reagents
  申请人：Ivoclar Vivadent AG

  公开号：US20200087241A1

  公开（公告）日：2020-03-19

  Radically polymerizable composition which contains at least one vinyl ether according to general formula I: in which the variables have the following meanings: A is H, CN, a cycloaliphatic, linear or branched aliphatic C 1 -C 30 hydrocarbon residue, an aromatic C 6 -C 30 hydrocarbon residue or a combination thereof; X is —COO—, —CON(R 3 )— or is dispensed with; B is H, CN, a cycloaliphatic, linear or branched aliphatic C 1 -C 30 hydrocarbon residue, an aromatic C 6 -C 30 hydrocarbon residue or a combination thereof; Y is —COO—, —CON(R 3 )— or is dispensed with; R 1-3 in each case independently of one another are hydrogen, a cycloaliphatic, linear or branched aliphatic C 1 -C 10 hydrocarbon residue or an aromatic C 6 -C 10 hydrocarbon residue; m is an integer from 1 to 6; n is an integer from 1 to 6; p is an integer from 1 to 6; wherein m and p cannot be greater than 1 at the same time and wherein if m=1, p=n, and if p=1, m=n.

  包含至少一种根据通式I的乙烯醚的根本聚合组合物：其中变量具有以下含义：A为H、CN、环脂肪、线性或支链脂肪C1-C30烃残基、芳香族C6-C30烃残基或它们的组合；X为—COO—、—CON(R3)—或省略；B为H、CN、环脂肪、线性或支链脂肪C1-C30烃残基、芳香族C6-C30烃残基或它们的组合；Y为—COO—、—CON(R3)—或省略；R1-3分别独立地为氢、环脂肪、线性或支链脂肪C1-C10烃残基或芳香族C6-C10烃残基；m为1到6的整数；n为1到6的整数；p为1到6的整数；其中m和p不能同时大于1，如果m=1，则p=n，如果p=1，则m=n。
• [EN] REGULATORS FOR CONTROLLING LINEAR AND PSEUDO-RING EXPANSION POLYMERIZATION OF VINYL MONOMERS<br/>[FR] RÉGULATEURS POUR RÉGULER LA POLYMÉRISATION LINÉAIRE ET PAR EXPANSION DE PSEUDO-CYCLES DE MONOMÈRES VINYLIQUES
  申请人：DISPOLTEC B V

  公开号：WO2017076992A1

  公开（公告）日：2017-05-11

  The invention concerns new regulator compounds for a novel polymerization process for vinyl monomers, which yields polymers with improved control over composition and nearly full to full conservation of architectural integrity up to high conversion. The regulator compounds are defined by according to anyone of the Formulas (1A), (1B), (1C), (1D), (1E), (1F), (1G), (1H) and (1I), wherein R1 stands for an optionally substituted secondary or tertiary alkyl or secondary or tertiary aralkyl; Z1 stands for -CN or a carboxylic acid ester of formula C(O)OR21; Z2 may be chosen from the group of -CN, carboxylic acid, salts of carboxylic acids, carboxylic acid ester, carboxylic acid amides, (hetero)aryl, alkenyl and halogen; R2, R3, R4 and R5 are each independently chosen from the group of H, alkyl, aralkyl, (hetero)aryl, -CN and carboxylic acid ester of formula C(O)OR22; R7 stands for a primary alkyl or primary aralkyl, -CN or hydrogen; Y stands for a bridging group and n is 2, 3, 4, 5 or 6; in case R1 stands for tertiary alkyl or tertiary aralkyl, R6 stands for a primary alkyl or primary aralkyl, -CN or a carboxylic acid ester of formula C(O)OR26; in case R1 stands for a secondary alkyl or secondary aralkyl, R6 stands for a primary or secondary alkyl or primary or secondary aralkyl, -CN, a carboxylic acid ester of formula C(O)OR26 or a phosphonic acid ester of formula P(O)(OR27)2, a (hetero)aryl or an alkenyl; R21, R22, R26 and R27 each independently stand for alkyl or aralkyi having from 1-30 carbon atoms, optionally containing heteroatoms.

  该发明涉及一种用于乙烯单体的新型聚合过程的调节剂化合物，该过程产生具有改善的组成控制和在高转化率下几乎完全至完全保持结构完整性的聚合物。调节剂化合物根据以下任一式(1A)、(1B)、(1C)、(1D)、(1E)、(1F)、(1G)、(1H)和(1I)中的任一式定义，其中R1代表可选择地取代的二级或三级烷基或二级或三级芳基烷基；Z1代表-CN或具有C(O)OR21式的羧酸酯；Z2可从-CN、羧酸、羧酸盐、羧酸酯、羧酸酰胺、(杂)芳基、烯基和卤素的群中选择；R2、R3、R4和R5分别独立地选择自H、烷基、芳基烷基、(杂)芳基、-CN和具有C(O)OR22式的羧酸酯的群；R7代表初级烷基或初级芳基、-CN或氢；Y代表桥接基，n为2、3、4、5或6；如果R1代表三级烷基或三级芳基，则R6代表初级烷基或初级芳基、-CN或具有C(O)OR26式的羧酸酯；如果R1代表二级烷基或二级芳基，则R6代表初级或二级烷基或初级或二级芳基、-CN、具有C(O)OR26式的羧酸酯或具有P(O)(OR27)2式的膦酸酯、(杂)芳基或烯基；R21、R22、R26和R27各自独立地代表具有1-30个碳原子的烷基或芳基，可选择地含有杂原子。
• Thermal-Degradation of Polymers and Polymer Models. IV. Thermolysis of a Polymethacrylate Model With an Unsaturated End Group
  作者：GR Morrow、ID Rae

  DOI：10.1071/ch9871477

  日期：——

  Thermal degradation of a model for the 'unsaturated end group' of poly(methyl methacrylate ) gives products which suggest that homolytic bond cleavage, and not a retro-ene reaction, is the major pathway. The diester (CH3)2C(COOCH3)CH2C(COOCH3)=CH2, when heated at 250-300�, gives up to 50 mole % of methyl 2-methylpropanoate (methyl isobutyrate ).

  聚甲基丙烯酸甲酯 "不饱和端基 "模型的热降解产物表明，均聚键裂解而不是逆烯反应是主要途径。 裂解，而不是逆烯反应。二酯 (CH3)2C(COOCH3)CH2C(COOCH3)=CH2 在 250-300� 温度下加热时，可生成高达 50 摩尔%的 2-甲基丙酸甲酯（异丁酸甲酯）。
• Materials leading to improved dental composites and dental composites made therefrom
  申请人：Brandenburg J. Charles

  公开号：US20060058416A1

  公开（公告）日：2006-03-16

  This invention relates to composite materials for restorative dentistry. More particularly, it relates to new components for dental composites, which impart an attractive combination of good mechanical properties and low shrinkage.

  这项发明涉及用于修复牙科的复合材料。更具体地说，它涉及用于牙科复合材料的新组分，这些组分赋予了良好的机械性能和低收缩的吸引人的组合。