(R)-(+)-3,4-dihydro-4-methylcoumarin | 30825-55-9

• 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: (R)-(+)-3,4-dihydro-4-methylcoumarin
• 英文别名: (R)-3,4-dihydro-4-methylcoumarin；(R)-4-methyl-3,4-dihydrocoumarin；3,4-Dihydro-4-methylcoumarin；(4R)-4-methyl-3,4-dihydrochromen-2-one
• CAS: 30825-55-9
• 化学式: C₁₀H₁₀O₂
• 分子量: 162.188
• InChiKey: KMCGEYKRTBLDNR-SSDOTTSWSA-N

物化性质

• 沸点：
  231.1±20.0 °C(Predicted)
• 密度：
  1.127±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (R)-N-methyl-3-(o-methoxyphenyl)butanamide 在 4-二甲氨基吡啶 、 sodium hydroxide 、 三溴化硼 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 2.5h， 生成 (R)-(+)-3,4-dihydro-4-methylcoumarin
  参考文献：
  名称：

  Synthetic Applications of the β-Lithiation of β-Aryl Secondary Amides:  Diastereoselective and Enantioselective Substitutions

  摘要：

  The sequence of beta-lithiation and electrophilic substitution of beta-aryl secondary amides is reported. The lithiations occur regioselectively at the beta-position, and the resulting lithiated intermediates can be reacted with a wide range of electrophiles to give substituted products. Reactions of beta-lithiated amides bearing an alpha-substituent provide substituted products with high diastereoselectivity, Electrophilic substitutions of beta-lithiated N-methylamides in the presence of the chiral diamine (-)-sparteine provide highly enantioenriched products. The methodology is used to synthesize enantioenriched beta-aryl beta-substituted amides, acids, and lactones.

  DOI：

  10.1021/jo952223r

文献信息

• A palladium-catalyzed enantioselective hydroesterification of alkenylphenols with phenyl formate. A facile approach to optically active dihydrocoumarins
  作者：Jingfu Li、Wenju Chang、Wenlong Ren、Wei Liu、Haining Wang、Yian Shi

  DOI：10.1039/c5ob01431j

  日期：——

  An effective palladium-catalyzed enantioselective hydroesterification of alkenylphenols with phenyl formate as a CO source is described.

  描述了一种有效的钯催化的对映选择性氢甲酯化反应，该反应以烯基酚和苯甲酸酯作为一氧化碳源。

• MACROCYCLIC GHRELIN RECEPTOR MODULATORS AND METHODS OF USING THE SAME
  申请人：Hoveyda Hamid

  公开号：US20080194672A1

  公开（公告）日：2008-08-14

  The present invention provides novel conformationally-defined macrocyclic compounds that can function as selective modulators of the ghrelin receptor (growth hormone secretagogue receptor, GHS-R1a and subtypes, isoforms and variants thereof). Methods of synthesizing the novel compounds are also described herein. These compounds are useful as agonists of the ghrelin receptor and as medicaments for treatment and prevention of a range of medical conditions including, but not limited to, metabolic and/or endocrine disorders, gastrointestinal disorders, cardiovascular disorders, obesity and obesity-associated disorders, central nervous system disorders, bone disorders, genetic disorders, hyperproliferative disorders and inflammatory disorders.

  本发明提供了一种新颖的构象定义明确的大环化合物，可以作为生长激素分泌素受体（GHS-R1a及其亚型、异构体和变体）的选择性调节剂。本文还描述了合成这些新型化合物的方法。这些化合物可用作生长激素分泌素受体的激动剂，用于治疗和预防一系列医疗状况，包括但不限于代谢和/或内分泌紊乱、胃肠道紊乱、心血管疾病、肥胖和与肥胖相关的疾病、中枢神经系统疾病、骨骼疾病、遗传疾病、过度增生性疾病和炎症性疾病。
• Synthesis of Chiral 3-Alkyl-3,4-dihydroisocoumarins by Dynamic Kinetic Resolutions Catalyzed by a Baeyer−Villiger Monooxygenase
  作者：Ana Rioz-Martínez、Gonzalo de Gonzalo、Daniel E. Torres Pazmiño、Marco W. Fraaije、Vicente Gotor

  DOI：10.1021/jo902519j

  日期：2010.3.19

  Baeyer−Villiger monooxygenases have been tested in the oxidation of racemic benzofused ketones. When employing a single mutant of phenylacetone monooxygenase (M446G PAMO) under the proper reaction conditions, it was possible to achieve 3-substituted 3,4-dihydroisocoumarins with high yields and optical purities through regioselective dynamic kinetic resolution processes.

  Baeyer-Villiger单加氧酶已在外消旋苯并稠合的酮的氧化中进行了测试。当在适当的反应条件下使用单个突变体的苯丙酮单加氧酶（M446G PAMO）时，可以通过区域选择性动态动力学拆分过程以高收率和光学纯度获得3-取代的3,4-二氢异香豆素。
• Catalytic Asymmetric Cyclocarbonylation of <i>o</i>-Isopropenylphenols:  Enantioselective Synthesis of Six-Membered Ring Lactones
  作者：Chune Dong、Howard Alper

  DOI：10.1021/jo040109f

  日期：2004.7.1

  Cyclocarbonylation of o-isopropenylphenols with CO (500 psi) and H2 (100 psi), using Pd(OAc)2 and (+)-DIOP as the chiral catalyst, in CH2Cl2 affords 3,4-dihydro-4-methylcoumarins in 60−85% yield and in up to 90% enantiomeric excess. The stereoselectivity is influenced by the structure of the chiral phosphine ligands and substrates, as well as by the reaction conditions.

  的Cyclocarbonylation ø用CO（500 psi）的和H -isopropenylphenols 2（100磅），使用Pd（OAc）2在CH DIOP作为手性催化剂， -和（+）2氯2次，得到3,4-二氢-4-甲基香豆素的产率为60-85％，对映体过量不超过90％。立体选择性受手性膦配体和底物的结构以及反应条件的影响。
• 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。