(R)-α-benzyloxy-γ-butyrolactone | 1190832-67-7

• 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: (R)-α-benzyloxy-γ-butyrolactone
• 英文别名: (3R)-3-(benzyloxy)dihydrofuran-2(3H)-one；(R)-3-(benzyloxy)dihydrofuran-2(3H)-one；(3R)-3-phenylmethoxyoxolan-2-one
• CAS: 1190832-67-7
• 化学式: C₁₁H₁₂O₃
• 分子量: 192.214
• InChiKey: SCNJRDRFVLSPOO-SNVBAGLBSA-N

物化性质

• 沸点：
  347.8±35.0 °C(Predicted)
• 密度：
  1.17±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (R)-α-benzyloxy-γ-butyrolactone 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 正丁基锂 、 四溴化碳 、 二异丁基氢化铝 、 三乙胺 、 二异丙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 17.67h， 生成 (R)-(3-(benzyloxy)-5-bromopent-1-ynyl)benzene
  参考文献：
  名称：

  Modular and Stereoselective Synthesis of Tetrasubstituted Helical Alkenes via a Palladium-Catalyzed Domino Reaction

  摘要：

  A highly modular and stereoselective synthesis of tetrasubstituted helical alkenes is accomplished by a Pd-catalyzed norbornene-mediated domino reaction. This protocol features the rapid assembly of four C-C bonds via sequential C-H activations and carbopalladations along with efficient access to enantiopure bromoalkyl aryl alkyne precursors using homologative alkynylation as the key transformation. Three distinct elements of stereoselectivity were observed in the preparation of the chiral helical alkenes: retention of stereochemistry of the substrates, induced helical diastereoselectivity in the alkene formation, and the exclusive exo-facial selectivity of the norbornene incorporation.

  DOI：

  10.1021/ol301495q
• 作为产物：
  描述：

  2,2,2-三氯乙酰胺苄酯 、 (R)-(+)-α-羟基-γ-丁内酯 在 三氟乙酸 作用下， 以 二氯甲烷 、 正戊烷 为溶剂， 以90%的产率得到(R)-α-benzyloxy-γ-butyrolactone
  参考文献：
  名称：

  Modular and Stereoselective Synthesis of Tetrasubstituted Helical Alkenes via a Palladium-Catalyzed Domino Reaction

  摘要：

  A highly modular and stereoselective synthesis of tetrasubstituted helical alkenes is accomplished by a Pd-catalyzed norbornene-mediated domino reaction. This protocol features the rapid assembly of four C-C bonds via sequential C-H activations and carbopalladations along with efficient access to enantiopure bromoalkyl aryl alkyne precursors using homologative alkynylation as the key transformation. Three distinct elements of stereoselectivity were observed in the preparation of the chiral helical alkenes: retention of stereochemistry of the substrates, induced helical diastereoselectivity in the alkene formation, and the exclusive exo-facial selectivity of the norbornene incorporation.

  DOI：

  10.1021/ol301495q

文献信息

• An Unusual Conformation of α-Haloamides Due to Cooperative Binding with Zincated Porphyrins
  作者：Marina Tanasova、Qifei Yang、Courtney C. Olmsted、Chrysoula Vasileiou、Xiaoyong Li、Mercy Anyika、Babak Borhan

  DOI：10.1002/ejoc.200900089

  日期：2009.9

  with a zinc porphyrin leads to an unprecedented conformation for the determination of the absolute stereochemistry of α-haloamides (α-halocarboxylic acids derivatized with 1,4-phenylenediamine) through the use of exciton-coupled circular dichroism (ECCD). With the use of chiral lactams, whose rotomeric contributions are minimized, both ECCD and NMR spectroscopy demonstrate that the porphyrin favors binding

  α-卤素原子和羧酰胺基团与锌卟啉之间协同结合的 CD 和 NMR 光谱证据导致了前所未有的构象，用于测定 α-卤代酰胺（用 1,4-苯二胺衍生的 α-卤代羧酸）的绝对立体化学) 通过使用激子耦合圆二色性 (ECCD)。随着手性内酰胺的使用，其旋转异构贡献最小化，ECCD 和 NMR 光谱都表明，与较小的氢原子相比，卟啉更倾向于结合到空间上要求更高的卤素原子的一侧。总而言之，数据强烈暗示了α-手性酰胺以前未观察到的异常构象。提供了用于确定 α-卤代羧酸的绝对立体化学的助记符。 (© Wiley-VCH Verlag GmbH &
• Synthesis of Fluorinated<i>exo</i>-Glycals through Modified Julia Olefination
  作者：Samuel Habib、Florent Larnaud、Emmanuel Pfund、Thierry Lequeux、Bernard Fenet、Peter G. Goekjian、David Gueyrard

  DOI：10.1002/ejoc.201201719

  日期：2013.4

  An efficient synthesis of fluorinated enol ethers derived from carbohydrates is reported. A modified Julia olefination reaction of functionalized lactones with fluorine-substituted sulfones gives the corresponding monofluorinated tri- or tetra-substituted exo-glycals.

  报道了从碳水化合物衍生的氟化烯醇醚的有效合成。官能化内酯与氟取代的砜的改良 Julia 烯化反应得到相应的单氟化三或四取代外加糖。
• Synthesis and Antibacterial Activity of Novel 2-Oxo-pyrrolidinyl Oxazolidinones
  作者：Deepak Bhattarai、Sun-Hee Lee、Hyeong-Kyu Kim、Soon-Bang Kang、Ae-Nim Pae、Eunice Eun-Kyeong Kim、Taeg-Won Oh、Sang-Nae Cho、Gyo-Chang Keum

  DOI：10.5012/bkcs.2012.33.4.1310

  日期：2012.4.20

  Novel antibacterial oxazolidinones bearing pyrrolidinone ring system at the C-5 side chain were synthesized and their in vitro antibacterial activities were evaluated. Most of the synthesized oxazolidinones showed good antibacterial activity against the Gram-positive and Gram-negative bacteria tested.

  合成了具有吡咯烷酮环系的C-5侧链的新型抗菌噁唑烷酮，并评估了其体外抗菌活性。大多数合成的噁唑烷酮对所测试的革兰氏阳性菌和革兰氏阴性菌表现出良好的抗菌活性。