6A,6b,12a,12b-tetrahydro-cyclobuta[1,2-c;3,4-c'] dichromium ene-6,12-dione | 138808-84-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 3,4-二氢香豆素
• 英文名称: 6A,6b,12a,12b-tetrahydro-cyclobuta[1,2-c;3,4-c'] dichromium ene-6,12-dione
• 英文别名: 6A,6b,12a,12b-tetrahydro-cyclobuta[1,2-c;3,4-c']dichromen-6,12-dion；9,19-Dioxapentacyclo[10.8.0.02,11.03,8.013,18]icosa-3,5,7,13,15,17-hexaene-10,20-dione
• CAS: 138808-84-1
• 化学式: C₁₈H₁₂O₄
• 分子量: 292.291
• InChiKey: NEAHZKVDPWZHGT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  22
• 可旋转键数：
  0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 溶剂黄146 作用下， 生成 6A,6b,12a,12b-tetrahydro-cyclobuta[1,2-c;3,4-c'] dichromium ene-6,12-dione
  参考文献：
  名称：

  Stroem, Chemische Berichte, 1904, vol. 37, p. 1385

  摘要：

  DOI：

文献信息

• Photoinduced cycloaddition of biomass derivatives to obtain high-performance spiro-fuel
  作者：Junjian Xie、Lun Pan、Genkuo Nie、Jiawei Xie、Yakun Liu、Chi Ma、Xiangwen Zhang、Ji-Jun Zou

  DOI：10.1039/c9gc02790d

  日期：——

  The photoinduced conversion of biomass-derived chemicals to high value chemicals and advanced fuels is of great significance but still challenging. Herein, a green and efficient self-sensitized [2 + 2] cycloaddition process is developed to convert biomass-derived β-pinene and isophorone to spirocyclic molecules, which cannot be achieved by thermal catalytic conversion. The photoreaction can take place

  将生物质衍生的化学物质光诱导转化为高价值的化学物质和高级燃料具有重大意义，但仍具有挑战性。本文中，开发了一种绿色且有效的自敏化[2 + 2]环加成方法，以将生物质衍生的β-pine烯和异佛尔酮转化为螺环分子，这是无法通过热催化转化实现的。用异佛尔酮作为自敏剂可以进行光反应，具有高选择性，产率高达91.1％。通过三重态猝灭，磷光猝灭，斯特恩-沃尔默动力学分析，DFT计算和光化学动力学研究相结合，揭示了三重态敏化机理。当与加氢脱氧结合使用时，可以得到螺状燃料，总产率为85.0％，显示出0.911 g mL -1的高密度与传统的航空煤油（约0.78 g mL -1）相比，它具有16.8％的高低温特性。值得注意的是，自敏化的环加成反应策略可以扩展到广泛的生物质衍生的α，β-不饱和酮和烯烃。因此，这项工作为将低密度生物来源的原料升级为高密度碳氢化合物提供了一种有希望的环增长途径。
• De Jong, Recueil des Travaux Chimiques des Pays-Bas, 1924, vol. 43, p. 319
  作者：De Jong

  DOI：——

  日期：——
• DYNAMIC POLYMER MATERIAL FOR 3D PRINTING
  申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION

  公开号：US20170204292A1

  公开（公告）日：2017-07-20

  A polymer network for 3D printing has a first polymer and a second polymer. The first polymer and the second polymer are crosslinked by a photo-crosslink. The first polymer and the second polymer are independently selected from polylactic acid, poly(acrylonitrile butadiene styrene), polystyrene, nylon, high density polyethylene, polycarbonate, polyvinyl alcohol, polyethylene terephthalate, and thermoplastic polymers.
• Polymeric Carriers and Methods
  申请人：The Brigham and Women's Hospital, Inc.

  公开号：US20220403329A1

  公开（公告）日：2022-12-22

  Provided are methods of controlling disassociation of cells from a carrier, compositions, and methods of collecting cells. The methods of controlling disassociation of cells from a carrier may include contacting a polymeric carrier with one or more digesting agents to disassociate at least a portion of a plurality of cells from the polymeric carrier. The polymeric carrier may be crosslinked with a crosslinker including at least one of a redox sensitive moiety, a UV light sensitive moiety, a pH sensitive moiety, and a temperature sensitive moiety.
• US9944826B2
  申请人：——

  公开号：US9944826B2

  公开（公告）日：2018-04-17