4-isopropyloxetane-2-one | 10359-02-1

• 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: 4-isopropyloxetane-2-one
• 英文别名: 4-(1-methylethyl)oxetan-2-one；4-Isopropyloxetan-2-one；4-Isopropyl-oxetan-2-on；4-isopropyl-2-oxetanone；4-Propan-2-yloxetan-2-one
• CAS: 10359-02-1
• 化学式: C₆H₁₀O₂
• 分子量: 114.144
• InChiKey: RXDIFCRJKDATEB-UHFFFAOYSA-N

物化性质

• 沸点：
  110-113 °C(Press: 10 Torr)
• 密度：
  1.031±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  8
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2932209090

反应信息

• 作为反应物：
  描述：

  4-isopropyloxetane-2-one 在 镍 作用下， 150.0~160.0 ℃ 、10.3 MPa 条件下， 生成 4-甲基戊酸
  参考文献：
  名称：

  Preparation of carboxylic acids by the reduction of beta lactones

  摘要：

  公开号：

  US02484486A1
• 作为产物：
  描述：

  (RS)-carbonyl(cyclopentadienyl)[(SR)-3-hydroxy-4-methylpentanoyl](triphenylphosphino)iron 在 溴 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 0.25h， 以59%的产率得到4-isopropyloxetane-2-one
  参考文献：
  名称：

  Asymmetric synthesis of tetrahydrolipstatin and valilactone

  摘要：

  The highly diastereoselective aldol reaction between acyl complexes of the iron chiral auxiliary [(eta(5)-C5H5)Fe(CO)(PPh3)] and beta-hydroxy aldehydes (obtained via a Noyori asymmetric hydrogenation), followed by a tandem oxidative decomplexation-cyclisation process gives access to beta-substituted and alpha,beta-disubstituted beta-lactones in high ee. This methodology has been employed in the asymmetric syntheses of tetra hydrolipstatin and valilactone. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2008.11.012

文献信息

• Asymmetric [2 + 2] cycloaddition of ketene with aldehydes catalysed by chiral bissulfonamide–trialkylaluminium complexes
  作者：Yasufumi Tamai、Hideki Yoshiwara、Masahiro Someya、Jun Fukumoto、Sotaro Miyano

  DOI：10.1039/c39940002281

  日期：——

  Asymmetric [2 + 2] cycloaddition of ketene with the aldehydes 1a–g, catalysed by 10 mol% of C2-symmetric bissulfonamide 2a–c–R3Al complexes afforded optically active 4-substituted oxetan-2-ones 3a–g in up to 74% enantiomeric excess.

  C2对称性双磺酰胺2a-c-R3Al络合物催化剂用量为10 mol%时，实现了与醛1a-g的不对称[2+2]环加成反应，合成了光学活性的4-取代氧杂环丁烷-2-酮3a-g，其对映体过量率高达74%。
• Cationic palladium(ii) complex-catalyzed [2 + 2] cycloaddition and tandem cycloaddition–allylic rearrangement of ketene with aldehydes: an improved synthesis of sorbic acid
  作者：Tetsutaro Hattori、Yutaka Suzuki、Osamu Uesugi、Shuichi Oi、Sotaro Miyano

  DOI：10.1039/a908709e

  日期：——

  Cationic palladium(II) complexes [PdL2(PhCN)2](BF4)2 efficiently catalyze the [2 + 2] cycloaddition of ketene with aldehydes to give the corresponding oxetan-2-ones, among which 4-vinyl-substituted ones are further isomerized under the conditions to give 3,6-dihydro-2H-pyran-2-ones in good yields.

  阳离子钯(II)配合物[PdL2(PhCN)2](BF4)2有效催化烯酮与醛的[2 + 2]环加成反应生成相应的oxetan-2-ones，其中4-乙烯基取代的更进一步条件下异构化，以良好的收率得到 3,6-二氢-2H-吡喃-2-酮。
• SUSTAINED RELEASE COMPOSITIONS
  申请人：Takeda Chemical Industries, Ltd.

  公开号：EP1291023A1

  公开（公告）日：2003-03-12

  A composition prepared by containing or blending a physiologically active non-peptide substance and a biodegradable polymer having two or more carboxylic groups at its end or a salt thereof features: (1) larger content of the physiologically active non-peptide substance can be contained, as well as release of the same can be controlled or accelerated, whereby secure pharmaceutical effect is achieved; (2) when the physiologically active non-peptide substance causes subcutaneous stimulation, an activity of canceling the stimulation by strongly acidic group at its end is expected; and (3) high glass transition point and high stability.

  通过含有或混合生理活性非肽物质和具有两个或两个以上羧基末端的可生物降解聚合物或其盐制备的组合物具有以下特点：（1）可以含有更多生理活性非肽物质，并且可以控制或加速其释放，从而实现安全的药效；（2）当生理活性非肽物质引起皮下刺激时，预计具有在其末端具有强酸性基团的活性来取消刺激；以及（3）高玻璃转变温度和高稳定性。
• Method for Producing Polyhydroxyalkanoates
  申请人：Preishuber-Pflugl Peter

  公开号：US20090124787A1

  公开（公告）日：2009-05-14

  The invention relates to a process for preparing polyhydroxyalkanoates by polymerization of lactones of the general formula I, where the substituents and the index n have the meanings given in the description, in the presence of at least one catalyst of the formula (II) L I M a X a m , where the substituents and indices have the meanings given in the description. The invention further relates to poly-3-hydroxybutyrates which have a novel property profile and are obtainable for the first time by means of this process, and also biodegradable polyester mixtures based on these poly-3-hydroxybutyrates.

  本发明涉及一种通过在至少一种催化剂的存在下，聚合通式I的内酯制备聚羟基烷酸酯的方法，其中通式I的取代基和指数n的含义在说明中给出，催化剂的通式为(II) LIMaXam，其中取代基和指数的含义在说明中给出。本发明还涉及具有新的性质特征的聚-3-羟基丁酸酯，首次通过该方法获得，并且基于这些聚-3-羟基丁酸酯的可生物降解聚酯混合物。
• Sustained release compositions
  申请人：——

  公开号：US20040023987A1

  公开（公告）日：2004-02-05

  A composition prepared by containing or blending a physiologically active non-peptide substance and a biodegradable polymer having two or more carboxylic groups at its end or a salt thereof features: (1) larger content of the physiologically active non-peptide substance can be contained, as well as release of the same can be controlled or accelerated, whereby secure pharmaceutical effect is achieved; (2) when the physiologically active non-peptide substance causes subcutaneous stimulation, an activity of canceling the stimulation by strongly acidic group at its end is expected; and (3) high glass transition point and high stability.

  这是一篇有关于含有生理活性非肽物质和生物可降解聚合物的组合物的描述。该生物可降解聚合物在其末端具有两个或多个羧基或其盐，其特点是：（1）可以包含更多生理活性非肽物质，同时可以控制或加速其释放，从而实现安全的药物效果；（2）当生理活性非肽物质引起皮下刺激时，预计其末端的强酸性基团具有消除刺激的作用；（3）具有高玻璃转移温度和高稳定性。