2,3,3-trimethyl-2,3-dihydrobenzofuran | 70201-81-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 香豆素
• 英文名称: 2,3,3-trimethyl-2,3-dihydrobenzofuran
• 英文别名: 2,2,3-trimethyl-2,3-dihydrobenzofuran；2,2,3-trimethyl-3H-1-benzofuran
• CAS: 70201-81-9
• 化学式: C₁₁H₁₄O
• 分子量: 162.232
• InChiKey: FNJUZRQUGAORQB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  1-甲氧基-2-(3-甲基丁-2-烯-2-基)苯 在 氢溴酸 、 溶剂黄146 作用下， 生成 2,3,3-trimethyl-2,3-dihydrobenzofuran
  参考文献：
  名称：

  The Rearrangement of Phenyl Allyl Ethers. VIII. Ethyl p-(γ,γ-Dimethylallyloxy)-benzoate¹

  摘要：

  DOI：

  10.1021/ja01242a043

文献信息

• Ruthenium Porphyrin Catalyzed Intramolecular Carbenoid C−H Insertion. Stereoselective Synthesis of Cis-Disubstituted Oxygen and Nitrogen Heterocycles
  作者：Wai-Hung Cheung、Shi-Long Zheng、Wing-Yiu Yu、Guo-Chuan Zhou、Chi-Ming Che

  DOI：10.1021/ol034806q

  日期：2003.7.1

  [reaction: see text] A ruthenium porphyrin-catalyzed stereoselective intramolecular carbenoid C[bond]H insertion is described. Using [Ru(II)(TTP)(CO)] as catalyst, aryl tosylhydrazones are converted to 2,3-dihydrobenzofurans, 2,3-dihydroindoles, and beta-lactams in good yields and remarkable cis selectivity (up to 99%). Enantioselective synthesis of 2,3-dihydrobenzofurans is also achieved with [Ru(II)(D(4)-Por*)(CO)]

  [反应：见正文]描述了钌卟啉催化的立体选择性分子内类胡萝卜素C H键插入。使用[Ru（II）（TTP）（CO）]作为催化剂，芳基甲苯磺酰hydr以良好的收率和显着的顺式选择性（高达99％）转化为2,3-二氢苯并呋喃，2,3-二氢吲哚和β-内酰胺。 。以[Ru（II）（D（4）-Por *）（CO）]为催化剂也可完成2,3-二氢苯并呋喃的对映选择性合成，且ee最高可达96％。
• Achieving Site Selectivity in Metal-Catalyzed Electron-Rich Carbene Transfer Reactions from <i>N</i>-Tosylhydrazones
  作者：Naijing Su、Tianning Deng、Donald J. Wink、Tom G. Driver

  DOI：10.1021/acs.orglett.7b01694

  日期：2017.8.4

  Catalyst control of the site-selectivity of electron-rich alkyl, aryl disubstituted carbenes generated in situ from o-alkenyl-substituted N-tosylhydrazones was achieved in this study. Exposure of these substrates to copper iodide triggered the formation of α-alkoxy 2H-naphthalenones. This investigation established that changing the catalyst to a rhodium(II) carboxylate turned off cyclization and migration

  在该研究中，实现了对由邻烯基取代的N-甲苯磺酰hydr酮原位生成的富电子烷基，芳基二取代的碳烯的位点选择性的催化剂控制。这些底物暴露于碘化铜引发了α-烷氧基2 H-萘烯酮的形成。这项研究确定，将催化剂改为羧酸铑（II）可以关闭环化和富电子的金属卡宾与β-羧酸盐的迁移，并开启烯丙基C–H键功能化以非对映选择性提供1 H-茚。对该反应范围的检查表明，可以将醚基，氨基亚甲基和未活化的2°C–H键官能化。
• C- ARYL GLYCOSID DERIVATIVES, PHARMACEUTICAL COMPOSITION, PREPARATION PROCESS AND USES THEREOF
  申请人：SHANGHAI DE NOVO PHARMATECH CO. LTD.

  公开号：US20170037038A1

  公开（公告）日：2017-02-09

  This invention relates to a kind of C-aryl glycoside derivatives, its pharmaceutical compositions, preparation methods, and uses thereof. The preparation method comprises: method 1: in a solvent, deprotecting the acetyl protecting groups of compound 1-f in the presence of a base; method 2: 1) compound 2-g reacts with via Mitsunobu reaction; 2) deprotecting the acetyl protecting groups of compound 2-f obtained from step 1; method 3: 1) compound 2-g reacts with via nucleophilic substitution reaction; 2) deprotecting the acetyl protecting groups of compound 3-f obtained from step 1. The pharmaceutical composition comprises a kind of C-aryl glycoside derivatives; it's pharmaceutically acceptable salts and/or prodrugs thereof and excipient thereof. This invention further relates to a kind of C-aryl glycoside derivatives, it's pharmaceutically acceptable salts or pharmaceutical compositions thereof for the use in preparation of a SGLT inhibitor. The C-aryl glycoside derivatives of this invention provides a new direction for the study of SGLT inhibitors.

  这项发明涉及一种C-芳基糖苷衍生物，其药物组合物、制备方法及其用途。制备方法包括：方法1：在溶剂中，在碱的存在下去保护化合物1-f的乙酰保护基；方法2：1）化合物2-g通过Mitsunobu反应发生反应；2）去除从步骤1得到的化合物2-f的乙酰保护基；方法3：1）化合物2-g通过亲核取代反应发生反应；2）去除从步骤1得到的化合物3-f的乙酰保护基。药物组合物包括一种C-芳基糖苷衍生物；其药学上可接受的盐和/或前药以及赋形剂。这项发明还涉及一种C-芳基糖苷衍生物，其药学上可接受的盐或其药物组合物，用于制备SGLT抑制剂。这项发明的C-芳基糖苷衍生物为SGLT抑制剂的研究提供了新的方向。
• Palladium‐Catalyzed Atom‐Transfer Radical Cyclization at Remote Unactivated C(sp ³ )−H Sites: Hydrogen‐Atom Transfer of Hybrid Vinyl Palladium Radical Intermediates
  作者：Maxim Ratushnyy、Marvin Parasram、Yang Wang、Vladimir Gevorgyan

  DOI：10.1002/anie.201712775

  日期：2018.3

  A novel mild, visible‐light‐induced palladium‐catalyzed hydrogen atom translocation/atom‐transfer radical cyclization (HAT/ATRC) cascade has been developed. This protocol involves a 1,5‐HAT process of previously unknown hybrid vinyl palladium radical intermediates, thus leading to iodomethyl carbo‐ and heterocyclic structures.

  一种新型温和、可见光诱导的钯催化氢原子易位/原子转移自由基环化（HAT/ATRC）级联已经开发出来。该方案涉及先前未知的杂化乙烯基钯自由基中间体的 1,5-HAT 过程，从而产生碘甲基碳环和杂环结构。
• Cobalt‐Catalyzed Wagner–Meerwein Rearrangements with Concomitant Nucleophilic Hydrofluorination
  作者：Reece H. Hoogesteger、Nicola Murdoch、David B. Cordes、Craig P. Johnston

  DOI：10.1002/anie.202308048

  日期：2023.8.28

  A cobalt-catalyzed reaction has been developed, which proceeds via hydrogen atom transfer and radical-polar crossover steps, to form a phenonium ion under non-acidic conditions. This cationic intermediate can be regioselectively fluorinated by a tetrafluoroborate anion to give 1,2-aryl migrated products. Evaluation of distinctly substituted phenonium ion intermediates demonstrated the constraints for

  已经开发出一种钴催化反应，该反应通过氢原子转移和自由基极性交叉步骤进行，在非酸性条件下形成苯鎓离子。该阳离子中间体可以被四氟硼酸根阴离子区域选择性氟化，得到 1,2-芳基迁移产物。对明显取代的苯鎓离子中间体的评估表明了良好反应性和高选择性的限制。