2,7-Dimethyl-cycloheptanon | 7272-19-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,7-Dimethyl-cycloheptanon
• 英文别名: 2,7-dimethylcycloheptanone；2,7-Dimethylcycloheptan-1-one
• CAS: 7272-19-7
• 化学式: C₉H₁₆O
• 分子量: 140.225
• InChiKey: JEEQHJDSYXNZDE-UHFFFAOYSA-N

物化性质

• 沸点：
  192-194 °C(Press: 736 Torr)
• 密度：
  0.9246 g/cm3

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,7-Dimethyl-cycloheptanon 生成 3-Cyclopropyl-2,4-dimethyltropiliden
  参考文献：
  名称：

  烷基托吡烯的新途径。3-烷基-2,4-二甲基亚丙基的明确合成

  摘要：

  由 2,7-二甲基-2,6-环庚二烯酮 (III) 和烷基锂轻松制备的 1-烷基-2,7-二甲基-2,6-环庚二烯醇 (IV) 用硼酸脱水得到相应的 3-烷基-2,4-二甲基托亚基 (II) 收率良好。该路线提供了 II 的明确合成。

  DOI：

  10.1246/cl.1976.715
• 作为产物：
  描述：

  1-ethylidene-2-methyl-cyclohexane 生成 2,7-Dimethyl-cycloheptanon
  参考文献：
  名称：

  Cyanogen azide ring-expansion reaction

  摘要：

  DOI：

  10.1021/jo00956a019

文献信息

• Selective Homologation of Ketones and Aldehydes with Diazoalkanes Promoted by Organoaluminum Reagents
  作者：Keiji Maruoka、Amel B. Concepcion、Hisashi Yamamoto

  DOI：10.1055/s-1994-25682

  日期：——

  Organoaluminum-promoted single homologation or ring expansion of ketones and aldehydes with diazoalkanes has been described, and among various organoaluminum reagents, exceptionally bulky methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD) is found to be highly effective for the selective homologation of various ketones and aldehydes.

  介绍了一种利用重氮烷烃进行的酮和醛的一级同系化或环扩张反应，并发现，在多种有机铝试剂中，特别庞大的甲基铝双(2,6-二叔丁基-4-甲基苯氧化物)(MAD)对各种酮和醛的选择性同系化具有高度效果。
• Total Synthesis of Himachalene Sesquiterpenes of<i>Aphthona</i>and<i>Phyllotreta</i>Flea Beetles
  作者：Robert J. Bartelt、David Weisleder、Frank A. Momany

  DOI：10.1055/s-2003-36253

  日期：——

  A total synthesis is presented for himachalene-related norsesquiterpene ketone 1 (racemic), based on the Robinson annulation and other standard reactions. The route involved five steps from cycloheptanone. A favorable result was that the desired diastereomer of 1 was obtained preferentially (97:3) over the unwanted one. Molecular modeling (ab initio calculations) aided in confirming the assignment

  基于 Robinson 环化和其他标准反应，提出了喜马六烯相关的甲基倍半萜酮 1（外消旋）的全合成。该路线涉及环庚酮的五个步骤。一个有利的结果是，所需的非对映异构体 1 优先于 (97:3) 获得，而不是不需要的非对映异构体。分子建模（从头算计算）有助于确认 1 的相对立体化学的分配和合理化观察到的非对映异构体的比例。随后从 1 中产生了三种相关的倍半萜烃和两种醇。这六种化合物天然存在于几种跳蚤甲虫物种中，可能具有信息素功能。
• The formation of cyclopentenones and 3(2h)-furanones from acetylenic precursors
  作者：D.R. Williams、A. Abbaspour、R.M. Jacobson

  DOI：10.1016/s0040-4039(01)81959-6

  日期：1981.1

  Acetylenic alcohols, obtained in high yield from condensations of 3,3-diethoxypropyne or 3,3-ethylenedioxybutyne with cyclic ketones, may be used as substrates for cyclopentenone annelation or spirofuranone synthesis.

  由3，3-二乙氧基丙炔或3，3-乙二氧基丁炔与环状酮缩合得到的高收率的乙炔醇可用作环戊烯酮去核化或螺呋喃酮合成的底物。
• COPOLYMER, METHOD FOR PRODUCING SAME, RESIN MATERIAL FOR ELECTRIC WIRE SHEATHING, AND ELECTRIC WIRE
  申请人：Asahi Glass Company, Limited

  公开号：EP3330301A1

  公开（公告）日：2018-06-06

  To provide an ETFE copolymer and a wire coating resin material capable of forming a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature, and an electric wire having a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature. A copolymer comprising structural units derived from ethylene, structural units derived from tetrafluoroethylene, and structural units derived from a third monomer, wherein in an elution curve obtained by a temperature rising elution fractionation method with respect to the copolymer, a ratio (L/H) of a proportion (L: area%) of components with elution temperatures of from 190 to 200°C to a proportion (H: area%) of components with elution temperatures of at least 205°C, and a proportion (M: mol%) of structural units derived from the third monomer based on all structural units of the copolymer, satisfy a relation of log (L/H)/M≧0.90.

  提供一种 ETFE 共聚物和一种电线涂覆树脂材料，该材料能够形成在高温下抗应力开裂性能优异且耐热温度高的涂覆层，以及一种具有在高温下抗应力开裂性能优异且耐热温度高的涂覆层的电线。一种共聚物，由乙烯衍生的结构单元、四氟乙烯衍生的结构单元和第三种单体衍生的结构单元组成，其中在通过升温洗脱分馏法获得的与共聚物有关的洗脱曲线中，洗脱比例（L：洗脱温度为 190 至 200℃的组分的比例（L：面积％）与洗脱温度至少为 205℃的组分的比例（H：面积％），以及衍生自第三单体的结构单元的比例（M：摩尔％）（基于共聚物的所有结构单元），满足 log (L/H)/M≧0 的关系。90.
• Copolymer, method for its production, wire coating resin material and electric wire
  申请人：AGC Inc.

  公开号：US10607749B2

  公开（公告）日：2020-03-31

  To provide an ETFE copolymer and a wire coating resin material capable of forming a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature, and an electric wire having a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature. A copolymer comprising structural units derived from ethylene, structural units derived from tetrafluoroethylene, and structural units derived from a third monomer, wherein in an elution curve obtained by a temperature rising elution fractionation method with respect to the copolymer, a ratio (L/H) of a proportion (L: area %) of components with elution temperatures of from 190 to 200° C. to a proportion (H: area %) of components with elution temperatures of at least 205° C., and a proportion (M: mol %) of structural units derived from the third monomer based on all structural units of the copolymer, satisfy a relation of log (L/H)/M≥0.90.

  提供一种 ETFE 共聚物和一种电线涂覆树脂材料，该材料能够形成在高温下抗应力开裂性能优异且耐热温度高的涂覆层，以及一种具有在高温下抗应力开裂性能优异且耐热温度高的涂覆层的电线。一种共聚物，由乙烯衍生的结构单元、四氟乙烯衍生的结构单元和第三种单体衍生的结构单元组成，其中在通过升温洗脱分馏法获得的与共聚物有关的洗脱曲线中，洗脱温度为 190 至 200 摄氏度的组分比例（L：面积百分比）与洗脱温度至少为 205 摄氏度的组分比例（H：面积百分比）之比（L/H）、第三单体衍生的结构单元占共聚物所有结构单元的比例（M：摩尔百分比）满足 log (L/H)/M≥0.90 的关系。