ethyl 4-((tetrahydro-2H-pyran-2-yl)oxy)but-2-ynoate | 31555-03-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl 4-((tetrahydro-2H-pyran-2-yl)oxy)but-2-ynoate
• 英文别名: ethyl 4-(tetrahydro-2H-pyran-2-yloxy)but-2-ynoate；ethyl 4-(tetrahydropyran-2-yloxy)but-2-ynoate；4-tetrahydropyran-2-yloxy-but-2-ynoic acid ethyl ester；4-(tetrahydro-pyran-2-yloxy)-but-2-ynoic acid ethyl ester；4-(tetrahydropyran-2-yloxy)-2-butynoic acid ethyl ester；4-tetrahydropyran-2-yloxybut-2-ynoic acid ethyl ester；Ethyl 4-[tetrahydropyran-2-yloxy]-2-butynoate；ethyl 4-(oxan-2-yloxy)but-2-ynoate
• CAS: 31555-03-0
• 化学式: C₁₁H₁₆O₄
• 分子量: 212.246
• InChiKey: VDUSYQUDWKLMOM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl 4-((tetrahydro-2H-pyran-2-yl)oxy)but-2-ynoate 在 4-二甲氨基吡啶 、 对甲苯磺酸 、 三乙胺 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 5.0h， 生成 ethyl 4-acetoxybut-2-ynoate
  参考文献：
  名称：

  Synthesis of γ-Acetoxy β-Keto Esters Through Regioselective Hydration of γ-Acetoxy-α,β-alkynoates

  摘要：

  The At(I)-catalyzed regioselective hydration of gamma-acetoxy-alpha,beta-acetylinic ester by the assistance of a neighboring carbonyl group has beets developed. Varieties of simple primary, secondary, and tertiary gamma-acetoxy-alpha,beta-acetylinic esters, even those bearing sensitive functional group in the remote reaction sites, are selectively hydrated to the corresponding beta-keto esters. The reaction' tolerates a wide variety of other carboxylates, such as benzoates, propionates, acrylates, and pivalates, including chiral carboxylates with retention of the configuration. The broad substrate scope, including the derivatization of complex natural products and neutral and open air conditions, makes this atom economical approach very practical. O-18 labeling experiments disclose that the oxygen transposition occurs from the carboxylate group to the triple bond, not from water.

  DOI：

  10.1021/acs.joc.5b00400
• 作为产物：
  描述：

  氯甲酸乙酯 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.83h， 生成 ethyl 4-((tetrahydro-2H-pyran-2-yl)oxy)but-2-ynoate
  参考文献：
  名称：

  2-Alkynyl-and 2-alkenyl-pyrazolo-[4,3-e]-1,2,4-triazolo-[1,5-c]-pyrimidine adenosine A2a receptor antagonists

  摘要：

  具有结构式I或其药用可接受盐的化合物，其中R是R1，R2，R3，R4和R5为H，烷基或烷氧基烷基；R6为H，烷基，羟基烷基或—CH2F；R7，R8和R9为H，烷基，烷氧基，烷硫基，烷氧基烷基，卤素或—CF3；以及Z是可选择地取代的芳基，杂环芳基或杂环芳基烷基。还公开了化合物I的应用于治疗中枢神经系统疾病，特别是帕金森病，单独或与其他治疗帕金森病的药剂联合使用，以及包含它们的药物组合物。

  公开号：

  US20040220194A1

文献信息

• Catalytic (3+2) Palladium‐Aminoallyl Cycloaddition with Conjugated Dienes
  作者：Barry M. Trost、Zhongxing Huang

  DOI：10.1002/anie.201900693

  日期：2019.5.6

  application of tailored aminoallyl precursors for catalytic (3+2) cycloaddition with conjugated dienes via a Pd‐aminoallyl intermediate. The new cycloaddition reactions override the conventional (4+3) selectivity of aminoallyl cation cycloaddition through a sequence of Pd‐allyl transfer and ring closure. A variety of highly substituted or fused pyrrolidine rings were synthesized using the cycloaddition, and can

  我们描述了通过Pd-氨基烯丙基中间体与共轭二烯催化（3 + 2）环加成反应的量身定制的氨基烯丙基前体的设计和应用。通过一系列Pd-烯丙基转移和闭环反应，新的环加成反应超越了常规的（4 + 3）氨基烯丙基阳离子环加成反应。使用环加成反应可合成出各种高度取代或稠合的吡咯烷环，并可以用不同的钯催化剂进一步将[1,3] N-C重排为五元碳环。由双环吡咯烷产物制备各种衍生物也证明了（3 + 2）环加成的效用。
• Copper-catalyzed boration of activated alkynes. Chiral boranes via a one-pot copper-catalyzed boration and reduction protocol
  作者：Ho-Young Jung、Xinhui Feng、Hyohyun Kim、Jaesook Yun

  DOI：10.1016/j.tet.2011.07.061

  日期：2012.4

  Phosphine–copper(I) complexes efficiently catalyzed the mono-boration of electron-deficient alkynes in the presence of MeOH and also catalyzed conjugate reductions of alkenylboronates bearing an electron-withdrawing group. The mono-addition of bis(pinacolato)diboron to alkynes catalyzed by a copper–Xantphos complex produced vinylboronates with high regio and stereoselectivity and asymmetric reduction

  在甲醇存在下，磷化氢-铜（I）络合物可有效催化缺电子炔烃的单硼酸酯化反应，还可以催化带有吸电子基团的烯基硼酸酯的共轭还原反应。在铜-Xantphos络合物的催化下，将双（频哪醇）二硼单价加成到炔烃上，产生了具有高区域和立体选择性的乙烯基硼酸酯，并且通过手性铜-双膦催化剂使乙烯基硼酸酯不对称还原，从而可以合成具有高对映选择性的有价值的手性硼烷。一锅硼酸化/不对称还原α，β-不饱和炔酸酯可以用单一的铜-膦催化剂进行。
• Rhodium-Catalyzed Tandem Cyclization:  Formation of 1<i>H</i>-Indenes and 1-Alkylideneindans from Arylboronate Esters in Aqueous Media
  作者：Mark Lautens、Tzvetelina Marquardt

  DOI：10.1021/jo049722p

  日期：2004.7.1

  functionalized organorhodium intermediate which can cyclize onto nonterminal acetylenes in good to excellent yields. The catalytic system involves the use of electron-rich, sterically bulky ligands as tri-tert-butylphosphonium tetrafluoroborate stabilizing the organorhodium intermediates and reduces the incidence of protodeboronation in aqueous media.

  带有侧链迈克尔型受体烯烃或乙炔键的芳基硼酸酯经过铑基催化络合物的重金属化作用，生成官能化的有机铑中间体，该中间体可以良好的收率很好地环化到非末端乙炔上。催化体系包括使用富电子，空间庞大的配体如三-叔-butylphosphonium四氟硼酸盐稳定organorhodium中间体和减少在水性介质protodeboronation的发生率。
• cis-Semihydrogenation of alkynes with amine borane complexes catalyzed by gold nanoparticles under mild conditions
  作者：Eleni Vasilikogiannaki、Ioannis Titilas、Georgios Vassilikogiannakis、Manolis Stratakis

  DOI：10.1039/c4cc08163c

  日期：——

  Supported gold nanoparticles catalyze the semihydrogenation of alkynes to alkenes with ammonia borane or amine borane complexes in excellent yields and under mild conditions. Internal alkynes provide cis-alkenes, making this protocol an attractive alternative of the classical Lindlar's hydrogenation.

  负载的金纳米粒子可以在极好的收率下和温和的条件下，将炔烃与氨硼烷或胺硼烷配合物催化半氢化为烯烃。内部炔烃提供顺式烯烃，使该方案成为经典Lindlar加氢的有吸引力的替代方案。
• [EN] SUBSTITUTED PARA-BIPHENYLOXYMETHYL DIHYDRO OXAZOLOPYRIMIDINONES, PREPARATION AND USE THEREOF<br/>[FR] PARA-BIPHÉNYLOXYMÉTHYL-DIHYDRO-OXAZOLOPYRIMIDINONES SUBSTITUÉES, LEUR PRÉPARATION ET LEUR UTILISATION
  申请人：SANOFI AVENTIS

  公开号：WO2011034828A1

  公开（公告）日：2011-03-24

  The present invention relates to a series of substituted para-biphenyloxymethyl dihydro oxazolopyrimidinones of formula (I) as defined herein. This invention also relates to methods of making these compounds including novel intermediates. The compounds of this invention are modulators of metabotropic glutamate receptors (mGluR), particularly, mGluR2 receptor. Therefore, the compounds of this invention are useful as pharmaceutical agents, especially in the treatment and/or prevention of a variety of central nervous system disorders (CNS), including but not limited to acute and chronic neurodegenerative conditions, psychoses, cognition deficit disorders, convulsions, anxiety, depression, migraine, pain, sleep disorders and emesis.

  本发明涉及一系列以本文所定义的式(I)的取代对联苯氧甲基二氢噁唑吡咯嘧啶酮。本发明还涉及制备这些化合物的方法，包括新颖的中间体。本发明的化合物是代谢型谷氨酸受体（mGluR），特别是mGluR2受体的调节剂。因此，本发明的化合物在药物代理方面是有用的，特别是在治疗和/或预防各种中枢神经系统疾病（CNS），包括但不限于急性和慢性神经退行性疾病、精神病、认知缺陷症、癫痫、焦虑、抑郁、偏头痛、疼痛、睡眠障碍和呕吐等方面。