(R)-oct-3-yn-2-yl acetate | 129571-76-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (R)-oct-3-yn-2-yl acetate
• 英文别名: (R)-2-acetoxy-3-octyne；[(2R)-oct-3-yn-2-yl] acetate
• CAS: 129571-76-2
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: FUUWNFQGDGWUSO-SECBINFHSA-N

物化性质

• 沸点：
  224.6±23.0 °C(Predicted)
• 密度：
  0.930±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-oct-3-yn-2-yl acetate 在 palladium dichloride 氢氧化钾 、 copper dichloride 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 20.0~30.0 ℃ 、2.03 MPa 条件下， 反应 6.0h， 生成 (R)-3-[1-Chloro-pent-(Z)-ylidene]-4-methyl-oxetan-2-one
  参考文献：
  名称：

  Studies on Pd(II)-Catalyzed Synthesis of (Z)-α-Haloalkylidene-β-lactones from Cyclocarbonylation of 2-Alkynols and the Subsequent Coupling Reactions

  摘要：

  A good regio- and stereoselectivity was observed for the PdCl2-catalyzed cyclocarbonylation of 2-alkynols with CuCl2 affording (Z)-alpha-chloroalkylidene-beta-lactons. The highly optically active (Z)-alpha-chloroalkylidene-beta-lactones could be easily prepared from the readily available optically active propargylic alcohols. The Pd(II)-catalyzed cyclocarbonylation of 2-alkynols with CuBr2 was also studied. Although the yields of (Z)-alpha-bromoalkylidene-beta-lactones were low, due to the relatively higher activity of the C-Br bond, the coupling reactions of (Z)-alpha-bromoalkylidene-beta-lactones were quite smooth to afford the corresponding products in high yields. A rationale for this reaction is discussed.

  DOI：

  10.1021/jo0480038
• 作为产物：
  描述：

  1-己炔 在 正丁基锂 、 AK Amano lipase 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 26.5h， 生成 (R)-oct-3-yn-2-yl acetate
  参考文献：
  名称：

  手性仲烷基铜试剂的区域和立体选择性烯丙基取代：（+）-Lasiol，（+）-13-Norfaranal和（+）-Faranal的全合成

  摘要：

  由手性仲烷基碘化物通过保留性I / Li交换，然后用CuBr⋅P（OEt）3进行保留性重金属化，制备了手性仲烷基铜试剂。将溶剂转换为THF可显着提高其构型稳定性，并使这些铜试剂适合于区域选择性的烯丙基取代。光学富集的铜物质经过烯丙基溴的S N 2取代（最高> 99％S N 2区域选择性）。ZnCl 2的添加和手性烯丙基磷酸酯的使用允许将区域选择性转向S N 2'取代（高达> 99％S N 2'区域选择性）并执行高度选择性的抗-S N 2'替换，具有对两个相邻立体中心的绝对控制。该方法用于三种蚂蚁信息素（+）-紫杉醇，（+）-13-正法烷醛和（+）-法烷醛的合成（最高98：2 dr，99％ee）。

  DOI：

  10.1002/anie.201811330

文献信息

• Ring Strain-Promoted Allylic Transposition of Cyclic Silyl Ethers
  作者：Ivan Volchkov、Sangho Park、Daesung Lee

  DOI：10.1021/ol2013473

  日期：2011.7.1

  Relief of the ring strain of medium-sized rings promotes a regioselective allylic transposition of a C–O bond when catalyzed by rhenium oxide. Through the allylic transposition, eight-membered cyclic silyl ethers undergo ring contraction to the corresponding six-membered siloxacycles.

  rh氧化物催化时，中型环的环应力的释放促进了C–O键的区域选择性烯丙基转位。通过烯丙基转座，八元环甲硅烷基醚经历环收缩成相应的六元硅氧烷环。
• Acid-catalyzed rearrangement of α-hydroxytrialkylsilanes
  作者：Kazuhiko Sakaguchi、Masato Higashino、Yasufumi Ohfune

  DOI：10.1016/s0040-4020(03)00952-9

  日期：2003.8

  Cationic rearrangement of several α-hydroxysilanes is described. Treatment of both (1R,1′R,2′S)-α-hydroxycyclopropylsilane syn-9 and (1S,1′R,2′S)-anti-9 under aqueous H2SO4 underwent rearrangement via a common α-silyl cation intermediate A to give a mixture of the ring-opened (R)-vinylsilane 13, the tandem [1,2]-CC bond migration product (1R,2S,1′R)-14, and its 1′S isomer 15. On the other hand, the

  描述了几种α-羟基硅烷的阳离子重排。两者（1治疗- [R，1' - [R，2'小号）-α-hydroxycyclopropylsilane顺- 9和（1小号，1' - [R，2'小号） -反- 9下含水ħ 2 SO 4后行重排通过一个共同的α -甲硅烷基阳离子中间体甲，得到开环（的混合物[R）-vinylsilane 13，串联[1,2] -CC键迁移的产物（1 - [R，2小号，1' - [R ）- 14，及其1 'S异构体15。在另一方面中，（酸性治疗- [R ，ê）-α-hydroxyalkenylsilane 8或（- [R ，Ž） - 8被各具有部分外消旋化相伴，得到烯丙基醇的对映体异构体23经由一个优先顺-facial小号Ñ 2′反应。α-羟基炔基硅烷6和α-羟基烷基硅烷12均对酸性条件呈惰性。然而，在H 2水溶液中处理（R）-α-甲氧基甲炔基硅烷26SO 4给出了具有部分消旋
• Kinetic resolutions of chiral unsaturated alcohols that cannot be resolved efficiently via enantioselective epoxidation
  作者：Kevin Burgess、Lee D. Jennings

  DOI：10.1021/ja00176a076

  日期：1990.9
• PdCl₂-Catalyzed Efficient Transformation of Propargylic Amines to (<i>E</i>)-α-Chloroalkylidene-β-lactams
  作者：Shengming Ma、Bin Wu、Xuefeng Jiang

  DOI：10.1021/jo0480996

  日期：2005.4.1

  The PdCl2-catalyzed cyclocarbonylation reaction of propargylic amines with CuCl2 and benzoquinone afforded (E)-alpha-chloroalkylidene-beta-lactams in moderate to good yields. The formation of the corresponding Z-isomers or five-membered products was not observed. The reaction of the readily available optically active propargylic amines provides a convenient synthesis of the corresponding (E)-alpha-chloroalkylidene-beta-lactams with high ee values. The structure and the stereochemistry of the products were established by the X-ray single-crystal diffraction study of (E)-6d and (E)-6e, which indicates that the stereoselectivity in this reaction is different from what was observed with propargylic alcohols. A rationale for this reaction was proposed.
• Enantioselective esterifications of unsaturated alcohols mediated by a lipase prepared from Pseudomonas sp
  作者：Kevin Burgess、Lee D. Jennings

  DOI：10.1021/ja00016a032

  日期：1991.7

  Competition experiments and measurements of enantioselectivities were used to develop a simple active-site model (Figure 1) for resolutions of beta-hydroxy-alpha-methylene carbonyl compounds III via acyl transfers mediated by lipase from Pseudomonas sp. (AK). Further experiments were used to test and refine this model with respect to resolutions of allylic, propargylic, homopropargylic, and other alcohols (Tables I-IV, respectively). The model proved extremely reliable for predicting the sense of the asymmetric induction, and the combined data collected in this paper give an indication of what structural features of the substrates can be correlated with high enantioselectivities in these resolutions. Furthermore, the results account for the conspicuous reversal of enantioselectivity previously observed in resolutions of gamma-hydroxy-alpha,beta-unsaturated esters 35. Kinetic resolutions of two substrates (allenol 14 and dienol 9) via asymmetric epoxidations were performed for comparison with the methodology presented in this paper.