2-Undecyn-5-ol | 78502-44-0

• 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: 2-Undecyn-5-ol
• 英文别名: Undec-2-yn-5-ol
• CAS: 78502-44-0
• 化学式: C₁₁H₂₀O
• 分子量: 168.279
• InChiKey: OHETVPCLISTSPA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  12
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-Undecyn-5-ol 在 Lindlar's catalyst 喹啉 、 氢气 作用下， 以 正己烷 为溶剂， 反应 6.0h， 以72%的产率得到(+/-)-cis-2-Undecen-5-ol
  参考文献：
  名称：

  Stereochemistry of the iodocarbonatation of cis- and trans-3-methyl-4-pentene-1,2-diols: the unusual formation of several anti iodo carbonates

  摘要：

  A study on the stereoselective preparation of a series of 3-methyl-4,5-epoxy alcohols as an entry to polypropionates was undertaken. Initially, the opening of cis and trans TIPS-protected 2,3-epoxy butanols by propynyldiethylalane showed an excellent regioselectivity favoring the monoprotected 1,2-diol products. The resulting propargylic alcohols were stereoselectively reduced to the cis and trans 1-[(triisopropylsilyl)oxy]-3-methyl-4-hexen-2-ols. Iodocarbonatation of these four isomeric homoallylic alcohols was carried out and the stereochemistry of the intermediate iodo carbonates established. Interestingly, a complete anti selectivity (>20:1 anti:syn) was observed when both the syn 3-methyl and cis double-bond geometry were present (3b, 10, and 20). The anti relative configuration for all of the iodo carbonates was established by NMR, and that of 5b was confirmed by X-ray crystallography. This study demonstrated that the relative stereochemistry of the hydroxyl and C(3) methyl groups in combination with the cis or trans geometry of the alkene exerts a significant effect on the stereochemical outcome of the iodocarbonatation reaction. Methanolysis of the iodo carbonates produced the desired 3-methyl-4,5-epoxy alcohols. The application of this chemistry to the reiterative synthesis of polypropionates was carried out with epoxy alcohol 4a (anti isomer), producing a new homologated epoxy alcohol, 22, with six contiguous stereocenters in a highly stereoselective manner.

  DOI：

  10.1021/jo00073a027
• 作为产物：
  描述：

  庚醛 、 but-2-ynyltrimethylsilane 生成 2-Undecyn-5-ol
  参考文献：
  名称：

  PORNET J.; RANDRIANOELINA B., TETRAHEDRON LETT., 1981, 22, NO 14, 1327-1328

  摘要：

  DOI：

文献信息

• Carbonyl Allenylations andPropargylations by 3-Chloro-1-propyne or 2-Propynyl Mesylateswith Tin(IV) Chloride and Tetrabutylammonium Iodide
  作者：Yoshiro Masuyama、Akiko Watabe、Yasuhiko Kurusu

  DOI：10.1055/s-2003-41012

  日期：——

  By the use of tin(IV) chloride and tetrabutylammonium iodidein dichloromethane, 3-chloro-1-propyne or 2-propynyl mesylate canbe applied to allenylation and propargylation of aldehydes (carbonylallenylation and propargylation) to produce a mixture of 1-substituted2,3-butadien-1-ols and 1-substituted 3-butyn-1-ols. 1-Substituted2-propynyl mesylates selectively cause carbonyl propargylation,while 3-substituted 2-propynyl mesylates cause carbonyl allenylation.

  通过使用四氯化锡和四丁基碘化铵在二氯甲烷中，3-氯-1-丙炔或2-丙炔基甲磺酸酯可用于醛的烯丙炔化（碳基烯丙炔化和丙炔化），产生1-取代的2,3-丁二烯-1-醇和1-取代的3-丁炔-1-醇的混合物。1-取代的2-丙炔基甲磺酸酯选择性地导致碳基丙炔化，而3-取代的2-丙炔基甲磺酸酯导致碳基烯丙炔化。
• Carbonyl propargylation by 1-substituted prop-2-ynyl mesylates and carbonyl allenylation by 3-substituted prop-2-ynyl mesylates with tin(ii) iodide and tetrabutylammonium iodide
  作者：Yoshiro Masuyama、Akiko Watabe、Akihiro Ito、Yasuhiko Kurusu

  DOI：10.1039/b006646j

  日期：——

  1-Substituted prop-2-ynyl mesylates cause propargylation of aldehydes with tin(II) iodide, tetrabutylammonium iodide and sodium iodide in 1,3-dimethylimidazolidin-2-one to produce 2-substituted but-3-yn-1-ols, while 3-substituted prop-2-ynyl mesylates cause allenylation of aldehydes under the same conditions as those of the propargylation by 1-substituted prop-2-ynyl mesylates to produce 2-substituted

  1-取代的丙-2-炔基甲磺酸盐在 1,3-二甲基咪唑啉-2-酮中引起醛与碘化锡 (II)、碘化四丁基铵和碘化钠的炔丙基化，生成 2-取代的丁-3-yn-1-醇，而3-取代的prop-2-ynyl甲磺酸酯在与1-取代的prop-2-ynyl甲磺酸酯的炔丙基化相同的条件下引起醛的烯丙基化以产生2-取代的buta-2,3-dien-1-ols。
• Action du trimethylsilyl-1 butyne-2 sur les derives carbonyles en presence de catalyseurs: synthese d'alcools α-alleniques ou de derives chloropreniques.
  作者：Jacques Pornet、Benjamin Randrianoelina

  DOI：10.1016/s0040-4039(01)90308-9

  日期：1981.1
• Stereochemistry of the iodocarbonatation of cis- and trans-3-methyl-4-pentene-1,2-diols: the unusual formation of several anti iodo carbonates
  作者：Raymond Tirado、Jose A. Prieto

  DOI：10.1021/jo00073a027

  日期：1993.10

  A study on the stereoselective preparation of a series of 3-methyl-4,5-epoxy alcohols as an entry to polypropionates was undertaken. Initially, the opening of cis and trans TIPS-protected 2,3-epoxy butanols by propynyldiethylalane showed an excellent regioselectivity favoring the monoprotected 1,2-diol products. The resulting propargylic alcohols were stereoselectively reduced to the cis and trans 1-[(triisopropylsilyl)oxy]-3-methyl-4-hexen-2-ols. Iodocarbonatation of these four isomeric homoallylic alcohols was carried out and the stereochemistry of the intermediate iodo carbonates established. Interestingly, a complete anti selectivity (>20:1 anti:syn) was observed when both the syn 3-methyl and cis double-bond geometry were present (3b, 10, and 20). The anti relative configuration for all of the iodo carbonates was established by NMR, and that of 5b was confirmed by X-ray crystallography. This study demonstrated that the relative stereochemistry of the hydroxyl and C(3) methyl groups in combination with the cis or trans geometry of the alkene exerts a significant effect on the stereochemical outcome of the iodocarbonatation reaction. Methanolysis of the iodo carbonates produced the desired 3-methyl-4,5-epoxy alcohols. The application of this chemistry to the reiterative synthesis of polypropionates was carried out with epoxy alcohol 4a (anti isomer), producing a new homologated epoxy alcohol, 22, with six contiguous stereocenters in a highly stereoselective manner.
• PORNET J.; RANDRIANOELINA B., TETRAHEDRON LETT., 1981, 22, NO 14, 1327-1328
  作者：PORNET J.、 RANDRIANOELINA B.

  DOI：——

  日期：——