3,3,4,4-tetramethyldihydrofuran-2(3H)-one | 1679-54-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: 3,3,4,4-tetramethyldihydrofuran-2(3H)-one
• 英文别名: 3,3,4,4-Tetramethyloxolan-2-one
• CAS: 1679-54-5
• 化学式: C₈H₁₄O₂
• 分子量: 142.198
• InChiKey: CKXCKKOKJCBESQ-UHFFFAOYSA-N

物化性质

• 沸点：
  196.6±8.0 °C(Predicted)
• 密度：
  0.928±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3,3,4,4-tetramethyldihydrofuran-2(3H)-one 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 以0.7 g的产率得到2,2,3,3-tetramethyl-1,4-butanediol
  参考文献：
  名称：

  DERIVATIVES OF RELEBACTAM AND USES THEREOF

  摘要：

  Relebactam的衍生物、使用Relebactam的衍生物的治疗方法，特别是与β-内酰胺类抗生素结合使用以及其制药组合物已被披露。Relebactam的衍生物适合口服给药。

  公开号：

  US20200102307A1
• 作为产物：
  描述：

  六甲基乙烷 在 (S,S)-Mn(N,N′-bis(2-pyridylmethyl)-2,2′-bipyrrolidine) 、 双氧水 、 溶剂黄146 、 C₄₆H₄₀F₁₈MnN₆O₆S₂ 作用下， 以 乙腈 为溶剂， 反应 1.75h， 生成 3,3,4,4-tetramethyldihydrofuran-2(3H)-one
  参考文献：
  名称：

  10.1002/anie.202402858

  摘要：

  AbstractThe tert‐butyl group is a common aliphatic motif extensively employed to implement steric congestion and conformational rigidity in organic and organometallic molecules. Because of the combination of a high bond dissociation energy (~100 kcal mol−1) and limited accessibility, in the absence of directing groups, neither radical nor organometallic approaches are effective for the chemical modification of tert‐butyl C−H bonds. Herein we overcome these limits by employing a highly electrophilic manganese catalyst, [Mn(CF3bpeb)(OTf)2], that operates in the strong hydrogen bond donor solvent nonafluoro‐tert‐butyl alcohol (NFTBA) and catalytically activates hydrogen peroxide to generate a powerful manganese‐oxo species that effectively oxidizes tert‐butyl C−H bonds. Leveraging on the interplay of steric, electronic, medium and torsional effects, site‐selective and product chemoselective hydroxylation of the tert‐butyl group is accomplished with broad reaction scope, delivering primary alcohols as largely dominant products in preparative yields. Late‐stage hydroxylation at tert‐butyl sites is demonstrated on 6 densely functionalized molecules of pharmaceutical interest. This work uncovers a novel disconnection approach, harnessing tert‐butyl as a potential functional group in strategic synthetic planning for complex molecular architectures.

  DOI：

  10.1002/anie.202402858

文献信息

• Beta-lactamase inhibitors and uses thereof
  申请人：ARIXA PHARMACEUTICALS, INC.

  公开号：US10085999B1

  公开（公告）日：2018-10-02

  β-Lactamase inhibiting compounds, therapeutic methods of using the β-lactamase inhibiting compounds, particularly in combination with β-lactam antibiotics and pharmaceutical compositions thereof are disclosed. The β-lactamase inhibiting compounds are suitable for oral administration.

  β-内酰胺酶抑制化合物，使用β-内酰胺酶抑制化合物的治疗方法，特别是与β-内酰胺类抗生素结合以及其制药组合物被披露。这些β-内酰胺酶抑制化合物适合口服给药。
• AZTREONAM DERIVATIVES AND USES THEREOF
  申请人：ARIXA PHARMACEUTICALS, INC.

  公开号：US20190100516A1

  公开（公告）日：2019-04-04

  Disclosed herein are aztreonam derivatives, therapeutic methods of using the aztreonam derivatives, particularly in combination with β-lactamase inhibitors, and pharmaceutical compositions thereof. The aztreonam derivatives can be administered orally to provide orally bioavailable aztreonam.

  本文披露了阿特雷纳姆衍生物，使用阿特雷纳姆衍生物的治疗方法，特别是与β-内酰胺酶抑制剂结合使用的方法，以及它们的药物组成物。这些阿特雷纳姆衍生物可以口服给药，从而提供口服可利用的阿特雷纳姆。
• HIV PROTEASE INHIBITORS AND METHODS FOR USING
  申请人：Ghosh Arun K.

  公开号：US20110118330A1

  公开（公告）日：2011-05-19

  Compounds that inhibit proteolytic enzymes of Human Immunodeficiency Virus (HIV) are described. Preparation of the inhibitors, pharmaceutical compositions containing them, and uses of the compounds or compositions for the treatment of HIV infections are also described.

  描述了抑制人类免疫缺陷病毒（HIV）蛋白酶酶的化合物。还描述了抑制剂的制备、含有它们的药物组合物、以及这些化合物或组合物用于治疗HIV感染的用途。
• NON-IONIC ARYL KETONE BASED POLYMERIC PHOTO-ACID GENERATORS
  申请人：International Business Machines Corporation

  公开号：US20180044459A1

  公开（公告）日：2018-02-15

  Non-ionic photo-acid generating (PAG) polymerizable monomers were prepared that contain a side chain sulfonate ester of an alpha-hydroxy aryl ketone. The aryl ketone group has a perfluorinated substituent alpha to the ketone carbonyl. The sulfur of the sulfonate ester is also directly linked to a fluorinated group. PAG polymers prepared from the PAG monomers release a strong sulfonic acid when exposed to high energy radiation such as deep UV or extreme UV light. The photo-generated sulfonic acid has a low diffusion rate in an exposed resist layer subjected to a post-exposure bake (PEB) at 100° C. to 150° C., resulting in formation of good line patterns after development.

  制备了含有α-羟基芳基酮的侧链磺酸酯的非离子光酸发生（PAG）可聚合单体。芳基酮基团在酮基团的α位有全氟取代基。磺酸酯的硫也直接连接到氟化基团。从这些PAG单体制备的PAG聚合物在暴露于高能辐射（如深紫外或极紫外光）时释放出强磺酸。在经过后曝光烘烤（PEB）处理（100°C至150°C）的暴露光刻胶层中，光生成的磺酸扩散速率较低，结果在显影后形成良好的线型图案。
• Fluorine-Containing Sulfonic Acid Salt, Fluorine-Containing Sulfonic Acid Salt Resin, Resist Composition, and Pattern Forming Method Using Same
  申请人：Central Glass Company, Limited

  公开号：US20150198879A1

  公开（公告）日：2015-07-16

  Disclosed is a fluorine-containing sulfonic acid salt resin having a repeating unit represented by the following general formula (3). In the formula, each A independently represents a hydrogen atom, a fluorine atom or a trifluoromethyl group, and n represents an integer of 1-10. W represents a bivalent linking group, R 01 represents a hydrogen atom or a monovalent organic group, and M + represents a monovalent cation. A resist composition containing this resin is further superior in sensitivity, resolution and reproducibility of mask pattern and is capable of forming a pattern with a low LER.

  本公开了一种含氟磺酸盐树脂，其具有以下通用式（3）所代表的重复单元。在该式中，每个A独立地表示氢原子、氟原子或三氟甲基基团，n表示1-10的整数。W表示二价连接基团，R01表示氢原子或一价有机基团，M+表示一价阳离子。含有该树脂的抗蚀组合物在感光性、分辨率和掩膜图案的重现性方面更加优越，并且能够形成具有较低LER的图案。