benzyl 2-methylacetoacetate | 4949-45-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: benzyl 2-methylacetoacetate
• 英文别名: benzyl propionylacetate；benzyl 3-oxopentanoate；benzyl 3-oxovalerate；Benzylpropionylacetat
• CAS: 4949-45-5
• 化学式: C₁₂H₁₄O₃
• 分子量: 206.241
• InChiKey: ZRIZDTNKLLTMDO-UHFFFAOYSA-N

物化性质

• 沸点：
  40-41 °C(Press: 10 Torr)
• 密度：
  1.091±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  15
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  benzyl 2-methylacetoacetate 在 咪唑 、 palladium 10% on activated carbon 、 氢气 、 三乙胺 、 ytterbium(III) triflate 作用下， 以 四氢呋喃 、 甲醇 、 N,N-二甲基甲酰胺 为溶剂， -20.0~76.0 ℃ 、300.01 kPa 条件下， 反应 27.0h， 生成
  参考文献：
  名称：

  Discovery of 3,4-dihydropyrimidin-2(1H)-ones with inhibitory activity against HIV-1 replication

  摘要：

  3,4-Dihydropyrimidin-2(1H)-ones (DHPMs) were selected and derivatized through a HIV-1 replication assay based on GFP reporter cells. Compounds 14, 25, 31, and 36 exhibited significant inhibition of HIV-1 replication with a good safety profile. Chiral separation of each enantiomer by fractional crystallization showed that only the S enantiomer retained anti-HIV activity. Compound (S)-40, a novel and potent DHPM analog, could serve as an advanced lead for further development and the determination of the mechanism of action. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.12.090
• 作为产物：
  描述：

  benzyl penta-2,3-dienoate 在 Oxone 作用下， 以 水 、 N,N-二甲基甲酰胺 为溶剂， 以68%的产率得到benzyl 2-methylacetoacetate
  参考文献：
  名称：

  Oxone-promoted hydration of electron-deficient allenic esters and ketones into 1,3-dicarbonyl compounds

  摘要：

  A novel and mild protocol for the hydration of electron-deficient allenic esters and ketones into various 1,3-dicarbonyl compounds is described. The hydration of allenes promoted by oxone in DMF afforded the corresponding products in moderate to good yields. This work features the employment of only a catalytic amount of inexpensive and nontoxic solid reagent oxone (2KHSO(5)center dot KHSO4 center dot K2SO4), avoiding the utility of toxic metals or traditional Bronsted acids, in a green version of viewpoint. A possible reaction mechanism for this transformation is also primarily proposed. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2015.05.120

文献信息

• 5-(heterocyclic alkyl)-6-aryl-dihydropyrimidines
  申请人：Synaptic Pharmaceutical Corporation

  公开号：US05942517A1

  公开（公告）日：1999-08-24

  This invention is directed to dihydropyrimidine compounds which are selective antagonists for human .alpha..sub.1C receptors and which have the structure: ##STR1## wherein A is aryl; R.sub.1, R.sub.2 and R.sub.3 are alkyl or heteroalkyl; R.sub.4 is heterocyclic alkyl; and X is S, O or NR.sub.3. This invention also relates to use of these compounds for the treatment of benign prostatic hyperplasia and other diseases where antagonism of the human .alpha..sub.1C receptor is useful. The invention further provides pharmaceutical compositions comprising a therapeutically effective amount of such a compound and a pharmaceutically acceptable carrier.

  这项发明涉及选择性拮抗人类α1C受体的二氢嘧啶化合物，其结构为：##STR1##其中A为芳基；R.sub.1、R.sub.2和R.sub.3为烷基或杂原子烷基；R.sub.4为杂环烷基；X为S、O或NR.sub.3。该发明还涉及利用这些化合物治疗良性前列腺增生和其他需要拮抗人类α1C受体的疾病。该发明还提供包含该化合物的治疗有效量和药用可接受载体的药物组合物。
• Catalytic Enantioselective Cloke–Wilson Rearrangement
  作者：Alesandere Ortega、Rubén Manzano、Uxue Uria、Luisa Carrillo、Efraim Reyes、Tomas Tejero、Pedro Merino、Jose L. Vicario

  DOI：10.1002/anie.201804614

  日期：2018.7.2

  Racemic cyclopropyl ketones undergo enantioselective rearrangement to deliver the corresponding dihydrofurans in the presence of a chiral phosphoric acid as the catalyst. The reaction involves activation of the donor‐acceptor cyclopropane substrate by the chiral Brønsted acid catalyst to promote the ring‐opening event, thus generating a carbocationic intermediate that subsequently undergoes cyclization

  外消旋环丙基酮在手性磷酸作为催化剂存在下进行对映选择性重排，以递送相应的二氢呋喃。该反应涉及通过手性布朗斯台德酸催化剂活化供体-受体环丙烷底物以促进开环事件，从而产生碳阳离子中间体，随后进行环化。计算研究和控制实验支持这种机制途径。
• Antibiotic synthesis
  申请人：——

  公开号：US05998612A1

  公开（公告）日：1999-12-07

  A method of preparing intermediates for carbapenem antibiotics characterized by treating a N-deprotected acetoxy conpound of the formula: ##STR1## in the presence of a Lewis acid or a silylating agent to yeild an intermediate; and cyclizing the intermediate in the presence of rhodium (II) acetate to form a bicyclic ketoester.

  一种制备碳青霉烯类抗生素中间体的方法，其特征在于将式子为##STR1##的N-去保护的乙酰氧基化合物在Lewis酸或硅化剂存在下处理，得到一个中间体；并在存在二价铑醋酸盐的情况下使中间体环化，形成一个双环酮酯。
• Layered Double Hydroxides-Supported Diisopropylamide: Synthesis, Characterization and Application in Organic Reactions
  作者：M. Lakshmi Kantam、A. Ravindra、Ch. Venkat Reddy、B. Sreedhar、B. M. Choudary

  DOI：10.1002/adsc.200505266

  日期：2006.3

  The layered double hydroxides-supported diisopropylamide (LDH-DA) catalyst is found to be an efficient and selective solid base for aldol, Knoevenagel, Henry, Michael, transesterification and epoxidation reactions under liquid phase conditions. LDH-DA is synthesized by the interaction of lithium diisopropylamide with LDH-NO3 (as-synthesized) and calcined LDH-NO3. The LDH-DA (Mg/Al, 3/1) and their precursors

  发现层状双氢氧化物负载的二异丙基酰胺（LDH-DA）催化剂是在液相条件下用于醇醛，Knoevenagel，Henry，Michael，酯交换和环氧化反应的有效且选择性的固体碱。LDH-DA是通过二异丙基氨基锂与LDH-NO 3（合成后）和煅烧的LDH-NO 3相互作用而合成的。通过使用各种仪器技术，如FT-IR，TGA和DTA，粉末XRD，固态27 Al MAS NMR光谱，SEM和XPS（ESCA ），可以很好地表征LDH-DA（Mg / Al，3/1）及其前体）。
• Dihydropyridine derivative
  申请人：Ajinomoto Co., Inc.

  公开号：US06350762B1

  公开（公告）日：2002-02-26

  Dihydropyridine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an activity of selectively inhibiting the action of N-type calcium channel. They are used as remedies for various diseases relating to the N-type calcium channel.

  以下化学式的二氢吡啶衍生物及其类似物和药学上可接受的盐具有选择性抑制N型钙通道作用的活性。它们被用作治疗与N型钙通道相关的各种疾病的药物。