(1R,2S)-1-cyclohexyl-2-methyl-1,3-propanediol | 105401-07-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (1R,2S)-1-cyclohexyl-2-methyl-1,3-propanediol
• 英文别名: (1R,2S)-1-cyclohexyl-2-methylpropane-1,3-diol
• CAS: 105401-07-8
• 化学式: C₁₀H₂₀O₂
• 分子量: 172.268
• InChiKey: VYZBHLWIWOZNBP-WPRPVWTQSA-N

物化性质

• 沸点：
  284.5±8.0 °C(Predicted)
• 密度：
  1.010±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (1R,2S)-1-cyclohexyl-2-methyl-1,3-propanediol 在 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 生成 (2R,3R)-3-cyclohexyl-3-hydroxy-2-methylpropanal
  参考文献：
  名称：

  Stereoselective acetalization of 1,3-alkanediols by l-menthone: application to the resolution of racemic 1,3-alkanediols and to the determination of the absolute configuration of enantiomeric 1,3-alkanediols

  摘要：

  A general and reliable method for the resolution of racemic 1,3-alkanediols, which involves their conversion into diastereomeric spiroacetals derived from l-menthone, is described. Thus, the reaction of the bis-O-trimethylsilyl derivatives of racemic 1,3-alkanediols with l-menthone in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate affords the diastereomeric spiroacetals 3 and 4. The two can be readily separated by silica gel column chromatography. Hydrolysis of each diastereomer under acidic conditions liberates the corresponding enantiomerically pure diol. An empirically derived correlation of configuration and H-1 NMR chemical shifts for spiroacetals 3 and 4 has been developed which is rationalized based on long-range effects due to the magnetic anisotropy inherent to the menthane ring in a rigid spiroacetal conformation. The method described here should be widely applicable to the determination of the absolute configuration of various 1,3-alkanediols.

  DOI：

  10.1021/jo00031a019
• 作为产物：
  描述：

  (+/-)-1-cyclohexyl-2-methyl-2-propen-1-ol 在 咪唑 、 sodium hydroxide 、 9-borabicyclo[3.3.1]nonane dimer 、 三氟甲磺酸三甲基硅酯 、 四丁基氟化铵 、 双氧水 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 69.0h， 生成 (1R,2S)-1-cyclohexyl-2-methyl-1,3-propanediol
  参考文献：
  名称：

  Stereoselective acetalization of 1,3-alkanediols by l-menthone: application to the resolution of racemic 1,3-alkanediols and to the determination of the absolute configuration of enantiomeric 1,3-alkanediols

  摘要：

  A general and reliable method for the resolution of racemic 1,3-alkanediols, which involves their conversion into diastereomeric spiroacetals derived from l-menthone, is described. Thus, the reaction of the bis-O-trimethylsilyl derivatives of racemic 1,3-alkanediols with l-menthone in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate affords the diastereomeric spiroacetals 3 and 4. The two can be readily separated by silica gel column chromatography. Hydrolysis of each diastereomer under acidic conditions liberates the corresponding enantiomerically pure diol. An empirically derived correlation of configuration and H-1 NMR chemical shifts for spiroacetals 3 and 4 has been developed which is rationalized based on long-range effects due to the magnetic anisotropy inherent to the menthane ring in a rigid spiroacetal conformation. The method described here should be widely applicable to the determination of the absolute configuration of various 1,3-alkanediols.

  DOI：

  10.1021/jo00031a019

文献信息

• Highly Diastereofacial <i>Anti</i>-Aldol Reaction:  Practical Synthesis of Optically Active <i>anti</i>-2-Alkyl-3-Hydroxycarboxylic Acid Ester Units
  作者：Michio Kurosu、Miguel Lorca

  DOI：10.1021/jo001293h

  日期：2001.2.1

  variety of esters derived from commercially available norephedrine were used in diastereoselective anti-aldol reactions. The aldol reaction of designed 2-(N-2-methylbenzyl-N-2,4,6-trimethylbenzyl)amino-1-phenylpropanol esters 4a-d with aldehydes furnished anti-2-alkyl-3-hydroxycarboxylic acid esters in excellent diastereomeric ratios (>98:2) when LDA-Cp2ZrCl2 (0.3 equiv) was used for enolization, followed

  在非对映选择性抗醛醇缩合反应中使用了多种从市售的去甲麻黄碱衍生的酯。设计的2-（N-2-甲基苄基-N-2,4,6-三甲基苄基）氨基-1-苯基丙醇酯4a-d与醛的醛醇缩合反应生成了出色的非对映异构体的抗-2-烷基-3-羟基羧酸酯当使用LDA-Cp2ZrCl2（0.3当量）进行烯化时，比率为（> 98：2），然后将金属转移成烯醇化锆进行醛醇缩合。用于抗醛醇缩合反应的新型助剂3不具有叔胺的普通碱性。3可以用有机溶剂从酸性介质中提取。因此，它的使用不仅对于从酸性水溶液中提取醛醇类产物，而且对于在还原裂解后回收手性助剂3都是非常有利的。
• Asymmetric synthesis using diisopropyl tartrate modified (E)- and (Z)-crotylboronates: preparation of the chiral crotylboronates and reactions with achiral aldehydes
  作者：William R. Roush、Kaori Ando、Daniel B. Powers、Alan D. Palkowitz、Ronald L. Halterman

  DOI：10.1021/ja00173a023

  日期：1990.8

  Crotylboronates undergo highly diastereo- and enantioselective reactions with aliphatic (linear or α-monobranched; 72-91% ee), aromatic and α,β-unsaturated aldehydes (55-74% ee). The reaction diastereoselectivity closely parallels the reagent isomeric purity especially for reactions performed at −78 o C. The enantioselectivity is best in toluene for all substrates except benzaldehyde where best results

  巴豆基硼酸酯与脂肪族（线性或 α-单支链；72-91% ee）、芳香族和 α,β-不饱和醛（55-74% ee）发生高度非对映选择性和对映选择性反应。反应的非对映选择性与试剂异构体纯度密切相关，特别是对于在 -78 o C 下进行的反应。对所有底物的对映选择性在甲苯中最佳，但苯甲醛除外，因为苯甲醛在 THF 中获得最佳结果。本研究中合成的 14 种高烯丙醇中有 9 种的相对和绝对立体化学是通过与 Sharpless 不对称环氧化制备的环氧醇的相关性来确定的
• Enantioselective acetalization of racemic 1,3-alkanediols with l-methone under kinetically controlled conditions
  作者：Toshiro Harada、Sachi Tanaka、Akira Oku

  DOI：10.1016/s0040-4020(01)89438-2

  日期：——

  (derived from 1) in preference to spiroacetal 4 (derived from ent-1). The kinetically controlled acetalization is applied to a novel kinetic resolution of racemic 1,3-alkanediols: Optically active diols ent-1 of 55–95 % ee are obtained when the racemic diols are allowed to react with 1.5 equiv of enol silyl ether 10 under similar conditions.

  外消旋的1,3-链烷二醇（rac -1）通过在三氟甲磺酸（10 mol％）存在下用1-甲基烯醇三甲基甲硅烷基醚（10）处理进行对映选择性缩醛化反应，从而得到热力学上较不稳定的螺缩醛3（由1衍生）。优先于螺乙缩醛4（源自eNT -1）。动力学控制缩醛化被施加到外消旋的1,3-链烷二醇的新颖动力学拆分：光学活性二醇ENT -1 55-95％ee值时的外消旋二醇使其与烯醇甲硅烷基醚1.5当量反应得到10 在相似的条件下。
• Catalytic Asymmetric Iterative/Domino Aldehyde Cross-Aldol Reactions for the Rapid and Flexible Synthesis of 1,3-Polyols
  作者：Luqing Lin、Kumiko Yamamoto、Harunobu Mitsunuma、Yamato Kanzaki、Shigeki Matsunaga、Motomu Kanai

  DOI：10.1021/jacs.5b11192

  日期：2015.12.16

  aldehydes and stereoselectivity can be flexibly switched in a stepwise manner for the double-aldol reaction. Furthermore, asymmetric triple- and quadruple-aldol reactions are possible in one-pot using the appropriate amounts of donors and amine additives, rapidly elongating the carbon skeleton with controlling up to eight stereocenters. The method should be useful for straightforward synthesis of enantiomerically

  我们在这里报告了醛之间的催化不对称迭代和多米诺交叉羟醛反应，具有高度的稳健性、灵活性和通用性。Cu(I)-DTBM-SEGPHOS 复合物催化受体醛和由供体醛衍生的硼烯醇化物之间的不对称交叉羟醛反应，该反应是通过 Ir 催化的烯丙氧基硼酸酯异构化产生的。可以重复使用醛醇产物作为随后不对称醛醇反应的受体底物的单元过程。双醇醛反应的供体醛和立体选择性可以以逐步的方式灵活切换。此外，使用适量的供体和胺添加剂，可以在一锅法中进行不对称的三重和四重醛醇反应，通过控制多达八个立体中心快速拉长碳骨架。该方法可用于直接合成对映异构和非对映异构富集的 1,3-多元醇。
• Highly Diastereoselective <i>anti</i>-Aldol Reactions Utilizing the Titanium Enolate of <i>cis</i>-2-Arylsulfonamido-1- acenaphthenyl Propionate
  作者：Arun K. Ghosh、Jae-Hun Kim

  DOI：10.1021/ol034086n

  日期：2003.4.1

  [GRAPHIC]anti-Aldol reaction of Ti-enolate derived from cis-2-aryisulfonamido-1-acenaphthenyl propionate with representative aldehydes proceeded in excellent yield with high diastereoselectivity. Both enantiomers of cis-2-amino-1-acenaphthenol were synthesized employing lipase-catalyzed kinetic resolution as the key step.