(R)-(+)-3-Hexyn-2-ol | 109-50-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (R)-(+)-3-Hexyn-2-ol
• 英文别名: (R)-3-hexyne-2-ol；(R)-hex-3-yn-2-ol；(R)-3-hexyn-2-ol；(2R)-hex-3-yn-2-ol
• CAS: 109-50-2；129364-62-1；112780-08-2
• 化学式: C₆H₁₀O
• 分子量: 98.1448
• InChiKey: IFCAMPHNVKBSTF-ZCFIWIBFSA-N

物化性质

• 熔点：
  -34°C (estimate)
• 沸点：
  80°C
• 密度：
  0.909 g/mL at 25 °C
• 闪点：
  128°F

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

安全信息

• TSCA：
  Yes
• 危险等级：
  3
• 危险品标志：
  N
• 危险类别码：
  R10,R50
• 危险品运输编号：
  1987
• 包装等级：
  III
• 危险类别：
  3
• 安全说明：
  S61
• WGK Germany：
  3
• 危险标志：
  GHS02,GHS09
• 危险性描述：
  H226,H400
• 危险性防范说明：
  P273

制备方法与用途

化学性质：无色至淡黄色的液态物质，其折光率为1.4435至1.4450。

反应信息

• 作为反应物：
  描述：

  (R)-(+)-3-Hexyn-2-ol 在 Lindlar's catalyst 喹啉 、 氢气 作用下， 以71%的产率得到(R)-(-)-(Z)-3-hexen-2-ol
  参考文献：
  名称：

  Palladium(II)-Catalyzed Exchange and Isomerization Reactions. 17. Exchange of Chiral Allyl Alcohols with Hydroxide, Methoxide, and Phenyl at High [Cl^-]. Stereochemistry of the Wacker Reaction

  摘要：

  At high [Cl-] (> 2.0 M), PdCl42- catalyzes the exchange of chiral allylic alcohols with hydroxy, methoxy, and phenyl to give chiral allyl-substituted olefins. With unsymmetrical olefins, isomerization occurs along with exchange. The hydroxyl exchange occurs in aqueous solution while the other exchanges are carried out in methanol solution. At low [Cl-] (0.1 M) oxidation to the corresponding beta-hydroxy-, methoxy-, and phenyl-substituted carbonyl compounds occurred. The absolute configurations of the oxidation and exchange products should be the same if the same mode of addition to the Pd(II)-pi-complex is operative. The absolute configurations of the oxidation and exchange products for the phenylation reaction were the same, while for hydroxy and methoxy they were different. This result indicates methanol and water must have different stereochemistries of addition at high and low [Cl-]. Thus, previous studies showing anti hydroxypalladation at high [Cl-] are not valid indicators of the stereochemistry at low [Cl-]. If anti addition occurs at high [Cl-], the addition must be syn at low [Cl-].

  DOI：

  10.1021/jo9906274
• 作为产物：
  描述：

  3-己炔-2-醇 在 Pinene 、 9-硼双环[3.3.1]壬烷 、 pyridinium chlorochromate 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 2.0h， 生成 (R)-(+)-3-Hexyn-2-ol
  参考文献：
  名称：

  Palladium(II)-Catalyzed Exchange and Isomerization Reactions. 17. Exchange of Chiral Allyl Alcohols with Hydroxide, Methoxide, and Phenyl at High [Cl^-]. Stereochemistry of the Wacker Reaction

  摘要：

  At high [Cl-] (> 2.0 M), PdCl42- catalyzes the exchange of chiral allylic alcohols with hydroxy, methoxy, and phenyl to give chiral allyl-substituted olefins. With unsymmetrical olefins, isomerization occurs along with exchange. The hydroxyl exchange occurs in aqueous solution while the other exchanges are carried out in methanol solution. At low [Cl-] (0.1 M) oxidation to the corresponding beta-hydroxy-, methoxy-, and phenyl-substituted carbonyl compounds occurred. The absolute configurations of the oxidation and exchange products should be the same if the same mode of addition to the Pd(II)-pi-complex is operative. The absolute configurations of the oxidation and exchange products for the phenylation reaction were the same, while for hydroxy and methoxy they were different. This result indicates methanol and water must have different stereochemistries of addition at high and low [Cl-]. Thus, previous studies showing anti hydroxypalladation at high [Cl-] are not valid indicators of the stereochemistry at low [Cl-]. If anti addition occurs at high [Cl-], the addition must be syn at low [Cl-].

  DOI：

  10.1021/jo9906274

文献信息

• Catalytic Enantioselective Reduction of Ketones by a Chiral Gallium Complex and Catecholborane
  作者：Alan Ford、Simon Woodward

  DOI：10.1002/(sici)1521-3773(19990201)38:3<335::aid-anie335>3.0.co;2-t

  日期：1999.2.1

  Noyori's famous BINAL reagent Li[AlH(OEt)(BINOL dianion)] is formed by the combination of LiGaH4 , monothiobinaphthol (MTB), and catecholborane. With this mixture unsymmetrical ketones can be reduced in high enantioselectively. Un=unsaturated unit; R=alkyl.

  Noyori著名的BINAL试剂Li [AlH（OEt）（BINOL二价阴离子）]的催化活性形式是由LiGaH 4，单硫代二酚（MTB）和儿茶酚硼烷组成的。使用这种混合物，可以高对映选择性地还原不对称酮。Un =不饱和单位；R ＝烷基。
• Enantioselective Reduction of Prochiral Ketones by Catecholborane Catalysed by Chiral Group 13 Complexes
  作者：Alexander J. Blake、Anthony Cunningham、Alan Ford、Simon J. Teat、Simon Woodward

  DOI：10.1002/1521-3765(20001002)6:19<3586::aid-chem3586>3.0.co;2-s

  日期：2000.10.2

  asymmetric reduction of prochiral ketones, with catecholborane as the hydride source. Enantioface differentiation is on the basis of the steric requirements of the ketone substituents. Aryl/ n-alkyl ketones are reduced in 90-93% ee and RC(O)Me (e.g. R = iPr, cycloC6H11, tBu) in 60-72% ee. Other borane sources and alternative catalyst structures based on indium do not form enantioselective catalysts

  LiGaH4与S，O-螯合物2-羟基-2'-巯基-1,1'-联萘（MTBH2）结合以邻苯二酚硼烷为氢化物源，形成用于不对称还原前手性酮的活性催化剂。对映体的区别基于酮取代基的空间要求。在90-93％ee中还原芳基/正烷基酮，在60-72％ee中还原RC（O）Me（例如R = iPr，cycloC6H11，tBu）。其他硼烷源和基于铟的替代催化剂结构不形成对映选择性催化剂。
• Highly Regio- and Stereoselective Oxidative Hydroacetoxylation of 1,2-Allenylic Sulfoxides via a Different Mechanism
  作者：Chao Zhou、Zhao Fang、Chunling Fu、Shengming Ma

  DOI：10.1021/jo802755k

  日期：2009.4.3

  A highly regio- and stereoselective oxidative hydroacetoxylation of 1,2-allenylic sulfoxides affording 1-sulfonyl-1-alken-3-yl acetates in moderate to good yields was developed. Through the X-ray diffraction study, it was observed that the reaction may proceed via a 5-membered cyclic intermediate and the −OAc attacks the chiral carbon atom, which is different from what was observed in our previous

  开发了1，2-烯丙基亚砜的高度区域和立体选择性氧化氢乙酰氧基化，以中等至良好的产率提供了1-磺酰基-1-链烯基-3-基乙酸酯。通过X射线衍射研究中，观察到反应可以经由5元环的环状中间体和继续- OAC攻击的手性碳原子，这是从在我们以前的研究中观察到的不同。
• The Substrate Spectrum of the Inverting sec-Alkylsulfatase Pisa1
  作者：Markus Schober、Tanja Knaus、Michael Toesch、Peter Macheroux、Ulrike Wagner、Kurt Faber

  DOI：10.1002/adsc.201100864

  日期：2012.6.18

  The substrate spectrum of the inverting alkylsulfatase Pisa1 was investigated using a range of sec‐alkyl sulfate esters bearing aromatic, olefinic and acetylenic moieties. Perfect enantioselectivities were obtained for substrates bearing groups of different size adjacent to the sulfate ester moiety. Insufficient selectivities could be doubled by using dimethyl sulfoxide (DMSO) as co‐solvent. Hydrolytically

  使用一系列带有芳族，烯属和炔属部分的仲烷基硫酸酯对反相烷基硫酸酯酶Pisa1的底物谱进行了研究。对于带有与硫酸酯部分相邻的不同大小的基团的底物，获得了完美的对映选择性。通过使用二甲亚砜（DMSO）作为助溶剂，选择性可能会加倍。水解不稳定的苄基硫酸酯可通过引入吸电子取代基来充分稳定。总体而言，Pisa1似乎是的deracemisation一个非常有用的反相alkylsulfatase外消旋仲-醇通过 对其相应的硫酸酯进行酶水解，得到具有“反Kazlauskas”构型的同手性产物。
• Selective reductions. 46. Effect of the steric requirement at the 2-position of apopinene on chiral reductions. B-(iso-2-ethylapopinocampheyl)- and B-(iso-2-n-propylapopinocampheyl)-9-borabicyclo[3.3.1]nonanes as improved reagents for the chiral reduction of .alpha.,.beta.-acetylenic ketones and .alpha.-keto esters
  作者：Herbert C. Brown、P. Veeraraghavan Ramachandran、Steven A. Weissman、S. Swaminathan

  DOI：10.1021/jo00313a020

  日期：1990.12

  B-(Iso-2-ethylapopinocampheyl)-9-borabicyclo[3.3.1]nonane (Eapine-Borane, 7), and B-(Iso-2-n-propylapopinocampheyl)-9-borabicyclo[3.3.1]nonane (Prapine-Borane, 9), prepared via the hydroboration of 2-ethylapopinene (6) or 2-n-propylapopinene (8), respectively, with 9-borabicyclo[3.3.1]nonane, reduce prochiral alpha,beta-acetylenic ketones and alpha-keto esters to the corresponding alcohols with significantly higher optical induction than does Alpine-Borane (1). (-)-2-n-Propylapopinene was synthesized by treating nopyl tosylate with dimethyl cuprate prepared in situ from ethyllithium and cuprous iodide. (+)-2-n-Propylapopinene was synthesized by Schlosser metalation of (+)-alpha-pinene followed by treatment with ethyl iodide. 4-Phenyl-3-butyn-2-one was reduced to the corresponding propargylic alcohol in 89% ee and 96% ee by Eapine-Borane and Prapine-Borane, respectively, as compared to 82% ee with Alpine-Borane. Similar improved results were realized in the reduction of other acetylenic ketones by Eapine-Borane and Prapine-Borane. Similar improvements in the optical yields were realized in the reduction of alpha-keto esters by Eapine-Borane. For example, while Alpine-Borane produced methyl and ethyl lactate in 92% and 91% ee, respectively, Eapine-Borane gave these alcohols in 97% and 96% ee, respectively. Unfortunately, Prapine-Borane shows no improvement in percent ee for the reduction of alpha-keto esters. The increase in the percent ee realized is tentatively attributed to the increased steric requirements of the alkyl group at the 2-position of apopinene.