L-talitol | 5552-13-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: L-talitol
• 英文别名: sorbitol；L-altritol；(2S,3S,4R,5S)-hexane-1,2,3,4,5,6-hexol
• CAS: 5552-13-6
• 化学式: C₆H₁₄O₆
• 分子量: 182.174
• InChiKey: FBPFZTCFMRRESA-OMMKOOBNSA-N

物化性质

• 熔点：
  95-96 °C
• 沸点：
  494.9±0.0 °C(Predicted)
• 密度：
  1.596±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -3.1
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  121
• 氢给体数：
  6
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  L-talitol 、 乙酸酐 在 吡啶 作用下， 反应 16.0h， 生成 L-Altritol hexaacetate
  参考文献：
  名称：

  Synthesis of saccharides and related polyhydroxylated natural products. 1. Simple alditols

  摘要：

  DOI：

  10.1021/jo00346a051
• 作为产物：
  描述：

  (1R,2S)-1-[(4R,5S)-5-(benzhydryloxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-3-phenylsulfanylpropane-1,2-diol 在 sodium tetrahydroborate 、 sodium acetate 、 potassium carbonate 、 (+)-10-camphorsulfonic acid 、 间氯过氧苯甲酸 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 生成 L-talitol
  参考文献：
  名称：

  Total synthesis of the L-hexoses

  摘要：

  DOI：

  10.1016/s0040-4020(01)97596-9

文献信息

• DEOXYKETOHEXOSE ISOMERASE AND METHOD FOR PRODUCING DEOXYHEXOSE AND DERIVATIVE THEREOF USING SAME
  申请人：Izumori Ken

  公开号：US20100105885A1

  公开（公告）日：2010-04-29

  Providing 1- or 6-deoxy products corresponding to all of aldohexoses, ketohexoses and sugar alcohols, as based on Deoxy-Izumoring, as well as a method for systematically producing those products. A method for producing deoxyketohexose and a derivative thereof using a deoxyketohexose isomerase derived from Pseudomonas cichorii ST-24 (FERM BP-2736), comprising epimerizing 1-deoxy D-ketohexose or 6-deoxy D-ketohexose or 1-deoxy L-ketohexose or 6-deoxy L-ketohexose at position 3 to produce the individually corresponding 1-deoxy D-ketohexose or 6-deoxy D-ketohexose or 1-deoxy L-ketohexose or 6-deoxy L-ketohexose as an intended product.

  提供对应于所有己醛糖、己酮糖和糖醇的1-或6-去氧产物，基于去氧-Izumoring，以及一种系统生产这些产物的方法。一种使用来自Pseudomonas cichoriiST-24（FERM BP-2736）的去氧己酮糖异构酶生产去氧己酮糖及其衍生物的方法，包括将1-去氧D-己酮糖或6-去氧D-己酮糖或1-去氧L-己酮糖或6-去氧L-己酮糖在3号位置上对映异构化为各自对应的1-去氧D-己酮糖或6-去氧D-己酮糖或1-去氧L-己酮糖或6-去氧L-己酮糖作为预期产物。
• Effect of WO_<i>x</i> on Bifunctional Pd–WO_<i>x</i>/Al₂O₃ Catalysts for the Selective Hydrogenolysis of Glucose to 1,2-Propanediol
  作者：Chengwei Liu、Chenghua Zhang、Sikai Sun、Kangkai Liu、Shunli Hao、Jian Xu、Yulei Zhu、Yongwang Li

  DOI：10.1021/acscatal.5b00800

  日期：2015.8.7

  avoid the coke formation on catalysts. 1,2-PDO selectivity is dependent on the synergy of Lewis acid and metal sites; however, Brønsted acid sites have no contribution to the 1,2-PDO production. Typically, the Pd–WOx(5%)/Al2O3 catalyst possessing the optimal balance of Lewis acid and the metal site shows a 1,2-PDO selectivity of 60.8% at a glucose conversion of 92.2% and has a lifetime of over 200 h.

  通过逐步润湿浸渍法制备了一系列不同WO x含量的Pd-WO x / Al 2 O 3催化剂。研究了WO x对Pd–WO x / Al 2 O 3催化剂的理化性质的影响，以及它们对葡萄糖氢解成1,2-丙二醇（1,2-PDO）的催化性能。在低表面W密度（0.3–2.1 W nm –2）下，Pd–WO x / Al 2 O 3催化剂上存在变形的离析WO x和低聚物WO x。此外，隔离的WO在Pd–WO x（5％）/ Al 2 O 3催化剂上，有4种是主要物质。当W密度增加到3.1 W nm –2时，Pd–WO x（30％）/ Al 2 O 3催化剂上占主导地位的是聚合的WO x物质。随着W密度的增加，Pd表面积减小，而酸量增加。此外，分离的WO 4和低聚WO x物种提供了增加的路易斯酸位点，而聚合物WO x上存在增加的布朗斯台德酸位点物种。路易斯酸位点促进葡萄糖异构化为果糖，这是葡萄糖氢解为1,
• Method for developing a lithographic printing plate precursor
  申请人：Ohnishi Hironori

  公开号：US20050003311A1

  公开（公告）日：2005-01-06

  The present invention relates to a method for developing a lithographic printing plate precursor suitable for applying a positive-working lithographic printing plate precursor for infrared laser which is used for direct plate making. Especially, the present invention relates to a method for developing a lithographic printing plate precursor by using an alkaline developing solution containing a development inhibitor, said lithographic printing plate precursor comprising a substrate and an image forming layer thereon which comprises an alkali soluble resin, said method comprising the steps of: (1) predetermining a Relationship α between the concentration of said development inhibitor and the alkalinity of said alkaline developing solution under appropriate development conditions; (2) measuring both said concentration of said development inhibitor and said alkalinity of said alkaline developing solution at the time of developing said precursor; and (3) controlling said concentration of said development inhibitor and/or said alkalinity in order to satisfy said Relationship α.

  本发明涉及一种用于开发适用于红外激光直接制版的正向工作的平版前体的方法。特别地，本发明涉及一种使用含有开发抑制剂的碱性显影液开发平版前体的方法，所述平版前体包括基材和其上的图像形成层，其中包括一种碱溶性树脂。该方法包括以下步骤：（1）预先确定在适当的开发条件下所述开发抑制剂浓度和所述碱性显影液的碱度之间的关系α；（2）测量在开发所述前体时所述开发抑制剂和所述碱性显影液的碱度的浓度；以及（3）控制所述开发抑制剂的浓度和/或所述碱度以满足所述关系α。
• Developing solution for lithographic printing plate precursor and method for making lithographic printing plate
  申请人：Ohnishi Hironori

  公开号：US20050175942A1

  公开（公告）日：2005-08-11

  An alkaline developing solution for development of a presensitized plate for use in making a lithographic printing plate, which developing solution comprises a polyoxyalkylene adduct of alkylene diamine, a polyoxyalkylene compound having an acid radical, and an anionic surfactant; a method for making a lithographic printing plate comprising the steps of: light-exposing a presensitized plate for use in making a lithographic printing plate; and developing the light-exposed plate with an alkaline developing solution comprising a polyoxyalkylene adduct of alkylene diamine, a polyoxyalkylene compound having an acid radical, and an anionic surfactant.

  一种用于制作平版印刷版的预感光板的碱性显影液，该显影液包括一种聚氧烷基烷二胺的加成物、一种具有酸基团的聚氧烷基化合物和一种阴离子表面活性剂；一种制作平版印刷版的方法，包括以下步骤：对预感光板进行曝光，然后使用一种碱性显影液对已曝光的板进行显影，该显影液包括一种聚氧烷基烷二胺的加成物、一种具有酸基团的聚氧烷基化合物和一种阴离子表面活性剂。
• Method for producing sugar alcohol
  申请人：——

  公开号：US20040143024A1

  公开（公告）日：2004-07-22

  A process for producing sugar alcohols having six carbon atoms, which comprises hydrogenating ketohexose, such as psicose, tagatose, sorbose and the like, in the presence of a catalyst containing a metal selected from the elements belonging to the eighth family in the periodic table, such as nickel, ruthenium, platinum, palladium and the like, is provided. According to this process, sugar alcohols having six carbon atoms can be produced efficiently at a large amount, the separation and recovering of the catalyst after completing the reaction are facilitated, and sugar alcohols having a desired production ratio can be produced efficiently.

  提供一种生产六碳糖醇的方法，包括在八族元素中选择的金属催化剂的存在下，氢化酮己糖，例如丙糖醇，塔加糖，山梨糖等。该过程可以高效地生产六碳糖醇，催化剂的分离和回收也更加容易，可以有效地生产所需比例的糖醇。其中，所述的八族元素包括镍、钌、铂、钯等。