5-O-acetyl-1,4:3,6-dianhydro-2-O-methyl-D-glucitol | 162426-85-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 呋喃类
• 英文名称: 5-O-acetyl-1,4:3,6-dianhydro-2-O-methyl-D-glucitol
• 英文别名: [(3S,3aR,6R,6aR)-3-methoxy-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-6-yl] acetate
• CAS: 162426-85-9
• 化学式: C₉H₁₄O₅
• 分子量: 202.207
• InChiKey: VOLDCGPQYALKLB-JQCXWYLXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.5
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  5-O-acetyl-1,4:3,6-dianhydro-2-O-methyl-D-glucitol 在 氢氧化钾 作用下， 以 乙醇 为溶剂， 反应 0.5h， 以94%的产率得到1,4:3,6-dianhydro-2-O-methyl-D-glucitol
  参考文献：
  名称：

  1,4：3,6-二脱水-d-葡萄糖醇（异山梨醇）的选择性烷基化

  摘要：

  摘要异山梨醇的两个羟基均可根据反应条件，通过与苄基氯或烯丙基溴直接烷基化，或通过涉及选择性单乙酰化，用四种不同试剂烷基化，最后脱乙酰基的三步法进行选择性烷基化。还描述了异山梨醇的单丁基和单甲基衍生物。

  DOI：

  10.1016/0008-6215(94)84022-9
• 作为产物：
  描述：

  5-乙酸异山梨酯 、 碘甲烷 在 calcium sulfate 、 silver(l) oxide 作用下， 反应 48.0h， 以92%的产率得到5-O-acetyl-1,4:3,6-dianhydro-2-O-methyl-D-glucitol
  参考文献：
  名称：

  1,4：3,6-二脱水-d-葡萄糖醇（异山梨醇）的选择性烷基化

  摘要：

  摘要异山梨醇的两个羟基均可根据反应条件，通过与苄基氯或烯丙基溴直接烷基化，或通过涉及选择性单乙酰化，用四种不同试剂烷基化，最后脱乙酰基的三步法进行选择性烷基化。还描述了异山梨醇的单丁基和单甲基衍生物。

  DOI：

  10.1016/0008-6215(94)84022-9

文献信息

• OPTICAL FILM
  申请人：Motoyoshi Tetsuya

  公开号：US20110288261A1

  公开（公告）日：2011-11-24

  The object of this invention is to provide an optical film formed of a copolycarbonate having a desired chromatic dispersion and low photoelasticity and having excellent melt processability. The optical film comprises a copolycarbonate composed of 25 to 90 mol % of unit (A) of the following formula, wherein each of R 1 and R 2 is independently a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms or a halogen atom, each of R 3 and R 4 is independently a hydrocarbon group having 1 to 10 carbon atoms, each of m and n is independently an integer of 0 to 4, and each of p and q is independently an integer of 0 or more, and 10 to 75 mol % of unit (B) of the following formula, wherein R a is a monocyclic or polycyclic alicyclic hydrocarbon group having 4 to 20 carbon atoms, the alicyclic hydrocarbon group may contain a hetero atom or may have a bridge structure, and q is 0 or 1, the optical film satisfying the following expression (1), R (450)< R (550)< R (650)  (1) wherein R(450), R(550) and R(650) are in-plane retardation values of the film at wavelengths of 450 nm, 550 nm and 650 nm.

  本发明的目的是提供一种光学薄膜，其由具有所需色散和低光弹性以及优异的熔融加工性的共聚碳酸酯形成。该光学薄膜包括由以下式中25至90摩尔％的(A)单元组成的共聚碳酸酯，其中R1和R2各自独立地为氢原子，具有1至10个碳原子的烃基或卤素原子，R3和R4各自独立地为具有1至10个碳原子的烃基，m和n各自独立地为0至4的整数，p和q各自独立地为0或更多的整数，并且由以下式中10至75摩尔％的(B)单元组成，其中Ra是具有4至20个碳原子的单环或多环脂环烃基，脂环烃基可以含有杂原子或具有桥式结构，q为0或1，该光学薄膜满足以下式(1)，R(450)
• Multilayer body
  申请人：TEIJIN LIMITED

  公开号：US10035336B2

  公开（公告）日：2018-07-31

  Provided is a multilayer body excellent in terms of heat resistance, low water absorbency, shock resistance, surface hardness, and adhesion, including: at least one layer made of a polycarbonate resin (A) whose main repeating units include a unit (a-1) represented by the following formula: and a unit (a-2) represented by the following formula: (wherein R1, R2, R3, and R4 are each a hydrogen atom or a C1-5 monovalent alkyl group), the unit (a-1) and the unit (a-2) being in a molar ratio (a-1/a-2) of 32/68 to 70/30; and at least one layer made of an aromatic polycarbonate resin (B).

  提供了一种在耐热性、低吸水性、抗冲击性、表面硬度和附着力等方面都非常出色的多层机身，包括 至少一层由聚碳酸酯树脂（A）制成，其主要重复单元包括由下式表示的单元（a-1）： 和一个由下式表示的单元（a-2）： (其中 R1、R2、R3 和 R4 各为氢原子或 C1-5 单价烷基），单元（a-1）和单元（a-2）的摩尔比（a-1/a-2）为 32/68 至 70/30；以及 至少一层芳香族聚碳酸酯树脂（B）。
• POLYCARBONATE RESIN AND MOLDED ARTICLE THEREOF
  申请人：Motoyoshi Tetsuya

  公开号：US20130253162A1

  公开（公告）日：2013-09-26

  A resin which has high heat resistance, high surface hardness and excellent moldability and is obtained from a biomass resource and a molded article thereof. The above polycarbonate resin comprises a unit (A) represented by the following formula: and a unit (B) represented by the following formula: as the main recurring units, the molar ratio of the unit (A) to the unit (B) being 5/95 to 95/5.
• COPOLYCARBONATE AND TRANSPARENT MOLDED ARTICLE OBTAINED THEREFROM
  申请人：Takeda Tsuyoshi

  公开号：US20140128567A1

  公开（公告）日：2014-05-08

  A copolycarbonate which is derived from a renewable resource and excellent in heat resistance, flowability and transparency and prevented from undergoing a dimensional change by water absorption and coloring during molding as well as a transparent molded article obtained therefrom. The copolycarbonate comprises predetermined amounts of a unit (A) constituted of an ether diol residue represented by the following formula (1), a unit (B) constituted of a bisphenol residue represented by the following formula (2), and a unit (C) constituted of another diol residue, wherein the ratio of terminal groups falls within the ranges of the following expressions (i) and (ii). (i) 0.001
• COPOLYCARBONATE
  申请人：TEIJIN LIMITED

  公开号：US20150087804A1

  公开（公告）日：2015-03-26

  A copolycarbonate having a low water absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness. The copolycarbonate (Z) of the present invention contains a unit (A) represented by the following formula and a unit (B) represented by the following formula (B) as main recurring units, the (A/B n=1 ) molar ratio of the unit (A) and the unit (B n=1 ) being 40/60 to 99/1. The unit (B n=1 ) is a single unit constituting a block. (R 1 ) is an alkylene group or cycloalkylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. R 2 is an alkylene group, cycloalkylene group or arylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. “r” and “s” are each independently an integer of 0 to 4 “l” is 0 or 1. “m” is 0 or 1. “n” is an integer of 1 to 100.)