For faster navigation, this Iframe is preloading the Wikiwand page for 1,1'-联-2-萘酚.

1,1'-联-2-萘酚

1,1'-联-2-萘酚
Skeletal formula of R-BINOL
Skeletal formula of S-BINOL
Ball-and-stick model of R-BINOL
Ball-and-stick model of S-BINOL
IUPAC名
[1,1'-binaphthalene]-2,2'-diol
别名 1,1'-联二萘酚、BINOL
识别
CAS号 602-09-5((R/S))  checkY
18531-94-7((R)-(+))  checkY
18531-99-2((S)-(-))  checkY
PubChem 11762
ChemSpider 11269
SMILES
 
  • Oc4ccc1c(cccc1)c4c2c3c(ccc2O)cccc3
InChI
 
  • 1/C20H14O2/c21-17-11-9-13-5-1-3-7-15(13)19(17)20-16-8-4-2-6-14(16)10-12-18(20)22/h1-12,21-22H
InChIKey PPTXVXKCQZKFBN-UHFFFAOYAX
性质
化学式 C20H14O2
摩尔质量 286.32 g·mol⁻¹
熔点 205-211 °C[1]
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

1,1'-联-2-萘酚1,1'-Bi-2-naphtholBINOL),通常简称联萘酚,是一种不对称合成中十分重要的手性配体。联萘酚分子具有手性轴,有两个对映异构体,可通过拆分分离。(R)-(+)与(S)-(-)异构体的比旋光度分别为+/- 35.5°(c=1,溶剂THF)。

制备

[编辑]

联萘酚的制备相较拆分而言并不困难。外消旋的联萘酚可由氯化铜2-萘酚的氧化偶联制备。不对称催化的例子如在S-(+)-苯丙胺存在下由氯化铜氧化2-萘酚,得S-联萘酚。[2]

CuCl2氧化偶联制备联萘酚 使用氯化铁做氧化剂也能得到同样的效果,反应可以水为体系进行,也可使用微波辐射固相合成的方法。反应机理为Fe(Ⅲ)离子将2-萘酚氧化成自由基,自身还原至亚铁离子,两个自由基二聚生成新的碳碳键,1,1'偶联产物是主要的。

拆分

[编辑]

光学活性的联萘酚则可从外消旋体拆分得到。常用N-苄基氯化辛可尼定做拆分试剂,与R型异构体形成不溶于有机溶剂的1:1配合物。使用乙酸乙酯将S型异构体萃取出来,沉淀用盐酸处理,再使用乙酸乙酯萃取得R型异构体纯品,而水相中的N-苄基氯化辛可尼定可回收重复使用。[3]

另一种拆分方法是与酰氯反应,例如与戊酰氯反应得二戊酸联萘酚酯,再使用胆固醇酯酶水解,由于酶的立体选择性,只水解S型异构体的酯。[3]而R型异构体需要加入甲醇钠才会水解。[4]

还可使用手性选择剂键合的高效液相色谱拆分。[5]

联萘酚衍生物

[编辑]

从联萘酚可制备许多有用的试剂,例如另一种手性配体联萘二苯膦。

有一种化合物“ALB”由联萘酚与氢化铝锂反应制备:[6]

AlLibis(binaphthoxide) synthesis

可作为不对称Michael加成催化剂。例如环己烯酮丙二酸二甲酯在其催化下的反应:

Asymmetric Michael Shibasaki 2002

参考资料

[编辑]
  1. ^ Datasheet, chemexper.com
  2. ^ Brussee, J.; Jansen, A. C. A. A highly stereoselective synthesis of s(-)-[1,1′-binaphthalene]-2,2′-diol. Tetrahedron Letters. 1983, 24 (31): 3261–3262. doi:10.1016/S0040-4039(00)88151-4. 
  3. ^ 3.0 3.1 "RESOLUTION OF 1,1'-BI-2-NAPHTHOL"页面存档备份,存于互联网档案馆), Dongwei Cai, David L. Hughes, Thomas R. Verhoeven, and Paul J. Reider, in Organic Syntheses Coll. Vol. 10, p.93; Vol. 76, p.1
  4. ^ "(S)-(−)- AND (R)-(+)-1,1'-BI-2-NAPHTHOL"页面存档备份,存于互联网档案馆), Romas J. Kazlauskas in Organic Syntheses, Coll. Vol. 9, p.77; Vol. 70, p.60
  5. ^ Landek, G.; Vinković, M.; Kontrec, D.; Vinković, V. Influence of mobile phase and temperature on separation of 1,1 '-binaphthyl-2,2 '-diol enantiomers with brush type chiral stationary phases derived from L-leucine. Chromatographia. 2006, 64 (7-8): 469–473. doi:10.1365/s10337-006-0041-5. 
  6. ^ A practical large-scale synthesis of enantiomerically pure 3-[bis(methoxycarbonyl)methyl]cyclohexanone via catalytic asymmetric Michael reaction Tetrahedron, Volume 58, Issue 13, 25 March 2002, Pages 2585–2588 Youjun Xu, Ken Ohori, Takashi Ohshima, Masakatsu Shibasaki doi:10.1016/S0040-4020(02)00141-2
{{bottomLinkPreText}} {{bottomLinkText}}
1,1'-联-2-萘酚
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?