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6-甲基-庚-1,5-二烯-3-酮 | 33698-69-0

中文名称
6-甲基-庚-1,5-二烯-3-酮
中文别名
——
英文名称
6-methyl-hepta-1,5-dien-3-one
英文别名
6-Methylhepta-1,5-dien-3-one
6-甲基-庚-1,5-二烯-3-酮化学式
CAS
33698-69-0
化学式
C8H12O
mdl
——
分子量
124.183
InChiKey
IYFOTWOTWXCOEN-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    168.0±19.0 °C(Predicted)
  • 密度:
    0.849±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    2.1
  • 重原子数:
    9
  • 可旋转键数:
    3
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.38
  • 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:
    6-甲基-庚-1,5-二烯-3-酮4-二甲氨基吡啶 、 sodium tetrahydroborate 、 正丁基锂 、 ammonium cerium(IV) nitrate 、 三乙胺叔丁醇 作用下, 以 四氢呋喃甲醇正己烷二氯甲烷乙腈 为溶剂, 反应 9.91h, 生成 紫草素
    参考文献:
    名称:
    A New Efficient Route for Multigram Asymmetric Synthesis of Alkannin and Shikonin
    摘要:
    A short and convergent approach for the synthesis of alkannin, shikonin and shikalkin is presented. A Hauser-type annulation of cyanophthalide 26 with enone 7 affords the complete aromatic system in just one step with concomitant attachment of the entire side chain. Subsequent Corey's oxazaborolidine mediated asymmetric reduction of the above advanced intermediate, leads to the required isomer in high enantiomeric excess. Finally, a selective and high yielding deprotection protocol furnishes the title compounds as pure crystalline precipitates. Thus, a multigram synthesis of shikonin, alkannin and shikalkin is achieved in high yield and enantioselectivity.
    DOI:
    10.1002/1521-3765(20020415)8:8<1795::aid-chem1795>3.0.co;2-v
  • 作为产物:
    描述:
    1-甲基-3-丁烯-2-基烯丙基醚chromium(VI) oxide正丁基锂硫酸 作用下, 以 四氢呋喃乙醚 为溶剂, 反应 8.17h, 生成 6-甲基-庚-1,5-二烯-3-酮
    参考文献:
    名称:
    1,5-己二烯-3-酮的光化学:分子内烯酮-烯烃光加成的波长依赖性选择性
    摘要:
    通过使用单色光,在 313-366 nm 的波长范围内研究了十个 1,5-己二烯-3-酮在甲醇中的光化学。为了了解对 5-methyl-1,5-hexadien-3-one (1) 观察到的不寻常的波长依赖性选择性,进行了量子产率测量、结构反应性研究、三线态敏化和淬火实验。虽然 10 项二烯酮研究中有 6 项显示选择性与 313 至 366 nm 的辐射波长无关,但有 4 项二烯酮表现出与波长相关的选择性,与 1 中观察到的相似,因此确定 1 不是唯一的,以前认为. 三线态敏化研究表明,波长依赖性主要来自以三线态环加成完成的单态α-裂解反应。多种三线态猝灭剂在抑制这些反应方面是无效的。讨论了一些可能的机制
    DOI:
    10.1021/ja00015a041
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文献信息

  • CROSSLINKING AGENT, CROSSLINKED POLYMER, AND USES THEREOF
    申请人:Tanaka Shinichi
    公开号:US20100209723A1
    公开(公告)日:2010-08-19
    There is provided a novel crosslinking agent for use in crosslinked polymer fabrication, specifically a crosslinking agent containing at least one compound selected from glyoxylate and a glyoxylic acid ester derivative represented by the following general formula (1): wherein R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms and R 3 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
    提供了一种新型交联剂,用于交联聚合物的制备,具体来说,这种交联剂包含至少一种从乙酰乙酸酯和以下通用公式(1)表示的乙酰乙酸酯衍生物中选择的化合物:其中R1和R2各自独立表示具有1至10个碳原子的烷基基团,R3表示氢原子或具有1至10个碳原子的烷基基团。
  • POLYVINYL ALCOHOL PARTICLES, PHARMACEUTICAL BINDER USING SAME, PHARMACEUTICAL TABLET, SUSTAINED-RELEASE PHARMACEUTICAL TABLET, AND METHOD FOR PRODUCING POLYVINYL ALCOHOL PARTICLES
    申请人:THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    公开号:US20170209377A1
    公开(公告)日:2017-07-27
    Provided herein is a polyvinyl alcohol fine particle suitable for a pharmaceutical binder for obtaining a pharmaceutical tablet of properties including good sustained release, high hardness, and excellent friability. The polyvinyl alcohol tine particle of the present invention contains 25 mol % or more of a gauche structure in polyvinyl alcohol molecules within a 0.8-nm region inside the particle from the particle surface.
    本发明提供了一种聚乙烯醇细颗粒,适用于制备具有良好持续释放性、高硬度和优异易碎性等特性的药物片剂的药物粘合剂。本发明的聚乙烯醇细颗粒在颗粒表面内0.8纳米范围内的聚乙烯醇分子中含有25摩尔%或更多的 gauche 结构。
  • AQUEOUS COATING COMPOSITION AND MULTILAYER STRUCTURE USING SAME
    申请人:THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    公开号:US20130302630A1
    公开(公告)日:2013-11-14
    Provided is aqueous coating composition which can give a gas-barrier layer having an improved water resistance while suppressing decrease of gas-barrier property inherent in a PVA-based resin. Also provided is a multilayer structure obtained using the aqueous coating composition. The aqueous coating composition comprises (A) acetoacetyl group-containing polyvinyl alcohol-based resin having an acetoacetyl group content of 0.5 to 3 mol %, and (B) alkaline earth metal salt of glyoxylic acid as a crosslinking agent.
    提供了一种水性涂料组合物,可以在抑制PVA基树脂固有气体阻隔性能降低的同时,提供一种具有改善的耐水性的气体阻隔层。还提供了使用该水性涂料组合物获得的多层结构。该水性涂料组合物包括(A)含有0.5至3摩尔%乙酰乙酰基的聚乙烯醇基树脂,以及(B)草酸碱土金属盐作为交联剂。
  • PROCESS FOR PREPARING PELLETS OF SAPONIFIED ETHYLENE/VINYL ACETATE COPOLYMER
    申请人:Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    公开号:EP0937557A1
    公开(公告)日:1999-08-25
    In the method of continuously producing pellets by continuously extruding a saponified ethylene-vinyl acetate (EVOH) solution in a strand form into a coagulation liquid and then cutting the resulting strand, the ratio between the weight X of the coagulation liquid and the weight Y of the strand of the saponified ethylene-vinyl acetate copolymer, namely the ratio X/Y, is set at 50 to 10,000. The coagulation liquid preferably contains 1 to 10,000 ppm of a carboxylic acid, 1 to 50,000 ppm of a carboxylic acid ester, or 1 to 15,000 ppm of a carboxylic acid salt. It is preferred as well that the water content of the continuously produced EVOH pellets be adjusted to 20 to 80% by weight and then brought into contact with an aqueous solution, having a specified concentration, of at least one compound selected from the group consisting of a boron compound (B), an acetic acid salt (C) and a phosphoric acid compound (D). Furthermore, the thus-obtained EVOH pellets are subjected to drying treatment by a combination of stationary drying and fluidized drying.
    在将皂化的乙烯-醋酸乙烯(EVOH)溶液以股状连续挤入凝固液,然后切割所得到的股而连续生产颗粒的方法中,凝固液的重量 X 与皂化的乙烯-醋酸乙烯共聚物股的重量 Y 之比,即 X/Y 之比,设定为 50 至 10000。 凝固液最好含有 1 至 10,000 ppm 的羧酸、1 至 50,000 ppm 的羧酸酯或 1 至 15,000 ppm 的羧酸盐。 最好还能将连续生产的 EVOH 颗粒的含水量调整到 20% 至 80% (按重量计),然后与至少一种选自硼化合物 (B)、乙酸盐 (C) 和磷酸化合物 (D) 的指定浓度的水溶液接触。 此外,通过固定干燥和流化干燥相结合的方法,对由此获得的 EVOH 颗粒进行干燥处理。
  • Method of manufacturing ethylene-vinyl acetate copolymer
    申请人:The Nippon Synthetic Chemical Industry Co., Ltd.
    公开号:EP1201688A2
    公开(公告)日:2002-05-02
    A method of manufacturing an ethylene-vinyl acetate copolymer is provided which suppresses the formation of scale and gelled product. In a continuous polymerization of ethylene and vinyl acetate in a polymerizing vessel with a cooling jacket and/or coil, the heat transfer area of the jacket and/or coil and the polymerizing calorific value per hour satisfy the following formula:         A < Q/2000 wherein A is the heat transfer area (m2) and Q is the calorific value (kcal/hr) for polymerization.
    本发明提供了一种生产乙烯-醋酸乙烯共聚物的方法,可抑制水垢和胶凝产品的形成。在带有冷却夹套和/或盘管的聚合容器中连续聚合乙烯和醋酸乙烯酯时,夹套和/或盘管的传热面积和每小时的聚合热值满足下式: A < Q/2000 其中 A 是传热面积(平方米),Q 是聚合热值(千卡/小时)。
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