3,7-Dioxa-bicyclo<3,3,0>octan | 5175-36-0

• 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: 3,7-Dioxa-bicyclo<3,3,0>octan
• 英文别名: 1H,3H-Furo[3,4-c]furan, tetrahydro-；1,3,3a,4,6,6a-hexahydrofuro[3,4-c]furan
• CAS: 5175-36-0
• 化学式: C₆H₁₀O₂
• 分子量: 114.144
• InChiKey: HYKQSAMEQTXOBX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3,7-Dioxa-bicyclo<3,3,0>octan 在 alumina 、 氨 作用下， 400.0 ℃ 、101.33 kPa 条件下， 生成 、
  参考文献：
  名称：

  一种连续合成氮杂双环类化合物的方法

  摘要：

  本发明涉及一种连续合成氮杂双环的方法。本发明的方法，以氧杂环为原料，在催化剂的作用下，直接与氨进行反应制备氮杂双环。本发明的合成氮杂双环的方法，工艺简单，路线绿色，反应过程污染少，可连续操作，效率高。

  公开号：

  CN115108962A
• 作为产物：
  描述：

  2,7,8-trioxa-1-phosphabicyclo[3.2.2]nonan-4-ylmethanol 以39%的产率得到
  参考文献：
  名称：

  DAVIS, R. V.;WINTERGRASS, D. J.;JANAKIRAMAN, M. N.;HYATT, E. M.;JACOBSON,+, INORG. CHEM., 30,(1991) N, C. 1330-1341

  摘要：

  DOI：

文献信息

• PROPYLENE COPOLYMER, POLYPROPYLENE COMPOSITION AND USES THEREOF, TRANSITION METAL COMPOUND AND OLEFIN POLYMERIZATION CATALYST
  申请人：Ikenaga Shigenobu

  公开号：US20080312461A1

  公开（公告）日：2008-12-18

  A transition metal compound represented by the following formula (2a):

  一个以以下公式（2a）表示的过渡金属化合物：
• [EN] MONOBACTAMS AND METHODS OF THEIR SYNTHESIS AND USE<br/>[FR] MONOBACTAMES ET PROCÉDÉS DE SYNTHÈSE ET D'UTILISATION DE CES DERNIERS
  申请人：HARVARD COLLEGE

  公开号：WO2015103583A1

  公开（公告）日：2015-07-09

  Described herein are monobactam antibiotics of Formula (I), (Ι'), (II), and (II'), along with methods and intermediates for preparing these compounds. Pharmaceutical compositions and methods of treating infectious diseases using the monobactams are also provided.

  本文描述了单环内酰胺抗生素的化学式(I)、(Ι')、(II)和(II')，以及制备这些化合物的方法和中间体。还提供了使用单环内酰胺治疗传染病的药物组合物和方法。
• Propylene polymer, propylene block copolymer, process for preparing said polymer and said block copolymer, and propylene polymer composition
  申请人：——

  公开号：US20020006993A1

  公开（公告）日：2002-01-17

  Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous propylene units wherein directions of &agr;-methyl carbons are the same as each other), and a process for preparing said polymer. Also disclosed are a propylene block copolymer containing a crystalline polypropylene portion having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain, and a process for preparing said copolymer. Further disclosed is a propylene polymer composition comprising the above propylene polymer or propylene block copolymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene polymer of the invention is excellent in rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc. The propylene block polymer of the invention is well-balanced between rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, filament, injection molded product, blow molded product, etc. The propylene polymer composition of the invention has excellent properties of the propylene polymer or the propylene block copolymer, and moreover is excellent in heat stability during the molding stage, long-term heat stability and weathering resistance. The propylene polymer composition can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc.

  本发明揭示了一种丙烯聚合物，其中包含高结晶度的煮沸庚烷不溶性组分，高立体规整性和极长的介股链（连续的丙烯单元，其中α-甲基碳的方向相同），以及制备该聚合物的方法。本发明还揭示了一种丙烯嵌段共聚物，其中包含具有高结晶度的煮沸庚烷不溶性组分，高立体规整性和极长的介股链的结晶聚丙烯部分，以及制备该共聚物的方法。本发明还揭示了一种丙烯聚合物组合物，包括上述丙烯聚合物或丙烯嵌段共聚物以及至少一种稳定剂，所述稳定剂选自酚类稳定剂、有机磷酸酯类稳定剂、硫醚类稳定剂、受阻胺类稳定剂和高级脂肪酸金属盐。本发明的丙烯聚合物在刚性、耐热性和耐湿性方面表现优异，并可用于制作板材、薄膜、丝绸、注塑成型产品、吹塑成型产品等。本发明的丙烯嵌段共聚物在刚性、耐热性和耐湿性之间平衡良好，并可用于制作板材、丝绸、注塑成型产品、吹塑成型产品等。本发明的丙烯聚合物组合物具有丙烯聚合物或丙烯嵌段共聚物的优异性能，并且在成型阶段具有良好的热稳定性、长期热稳定性和耐候性。该丙烯聚合物组合物可用于制作板材、薄膜、丝绸、注塑成型产品、吹塑成型产品等。
• Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
  申请人：——

  公开号：US20010044375A1

  公开（公告）日：2001-11-22

  Olefin polymerization catalysts are formed from: (I-1) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound, (D) a specific polyether compound and, optionally, (II-1) (III) an organometallic compound catalyst component; or (I-2) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compounds, (C) a specific organosilicon compound, and, optionally, (II-2) (III) an organometallic compound catalyst component; or the contact product (I-1) or (I-2) may be replaced by one which is obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of the catalyst components for the contact product (I-1) or (I-2).

  烯烃聚合催化剂是由以下成分形成的：（I-1）通过接触（A）固体钛催化剂成分，（B）有机金属化合物催化剂成分和（C）特定的有机硅化合物，（D）特定的聚醚化合物以及可选的（II-1）（III）有机金属化合物催化剂成分；或者（I-2）通过接触（A）固体钛催化剂成分，（B）有机金属化合物催化剂成分和（D）特定的聚醚化合物，（C）特定的有机硅化合物以及可选的（II-2）（III）有机金属化合物催化剂成分获得的接触产物；或者接触产物（I-1）或（I-2）可以被在催化剂成分的存在下预聚合2个或更多碳原子的烯烃所取代。
• Olefin block copolymers processes for producing the same and uses thereof
  申请人：——

  公开号：US20030055179A1

  公开（公告）日：2003-03-20

  The present invention provides polymers having any one of properties including affinity for metals or polar resins, impact resistance, mar resistance, heat resistance, rigidity, oil resistance, transparency, anti-fogging properties, electric insulating properties, high breakdown voltage, coating properties, low-temperature flexibility, moldability, environmental degradation, fluidity and dispersibility, and provides a process for preparation thereof. The olefin block copolymers (A-1) of the invention are represented by the formula (I) PO 1 —g 1 —B 1 (I) (wherein PO 1 is a segment composed of repeating units derived from an olefin having 2 to 20 carbon atoms, g 1 is an ester, ether, amide, imide, urethane, urea, silylether or carbonyl linkage, and B 1 is a segment containing an unsaturated hydrocarbon or a hetero atom). The olefin block copolymers are suitable for uses in adhesives; various molded articles such as construction and civil engineering materials, automobile interior and exterior materials, gasoline tanks, electric and electronic parts, medical care and sanitation materials, materials of miscellaneous goods, resin materials having environmental degradation properties, films and sheets; modifiers and dispersions.

  本发明提供了具有以下任一性质的聚合物，包括对金属或极性树脂的亲和性，抗冲击性，抗刮伤性，耐热性，刚度，耐油性，透明性，防雾性能，电绝缘性能，高击穿电压，涂料性能，低温柔性，可塑性，环境降解性，流动性和分散性，并提供其制备方法。本发明的烯烃嵌段共聚物（A-1）由公式（I）表示：PO1-g1-B1（I）（其中PO1是由具有2至20个碳原子的烯烃衍生的重复单元组成的片段，g1是酯，醚，酰胺，亚胺，脲，硅醚或羰基连接，B1是含有不饱和碳氢化合物或杂原子的片段）。烯烃嵌段共聚物适用于粘合剂；各种成型品，如建筑和土木工程材料，汽车内外饰料，汽油箱，电子和电气零件，医疗保健和卫生材料，杂货物料，具有环境降解性能的树脂材料，薄膜和片材；改性剂和分散剂。