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首例三氟甲磺酸铟(In(OTf))催化动力学形成的高烯丙醇向热力学更稳定的区域异构体的转化:在22α-甾醇合成中的应用

The First In(OTf) -Catalyzed Conversion of Kinetically Formed Homoallylic Alcohols into the Thermodynamically Preferred Regioisomers: Application to the Synthesis of 22α-Sterols.

作者信息

Loh Teck-Peng, Tan Kui-Thong, Hu Qi-Ying

机构信息

Department of Chemistry National University of Singapore 3 Science Drive 3, Singapore 117543 (Singapore) Fax: (+65) 779-1691.

出版信息

Angew Chem Int Ed Engl. 2001 Aug 3;40(15):2921-2922. doi: 10.1002/1521-3773(20010803)40:15<2921::AID-ANIE2921>3.0.CO;2-V.

DOI:10.1002/1521-3773(20010803)40:15<2921::AID-ANIE2921>3.0.CO;2-V
PMID:29711997
Abstract

A retro-ene reaction that generates the parent aldehyde and a sigmatropic rearrangement are involved in the In(OTf) -catalyzed conversion of homoallylic alcohols 1 into the thermodynamically favored regioisomers 2. This method can be used for the stereocontrolled synthesis of linear homoallylic 22α-sterols from their readily accessible branched 22β isomers.

摘要

铟(三氟甲磺酸盐)催化的高烯丙醇1转化为热力学上更稳定的区域异构体2的过程涉及生成母体醛的逆烯反应和一个[3,3] - 迁移重排。该方法可用于从易于获得的支链22β异构体立体选择性合成线性高烯丙基22α - 甾醇。

相似文献

1
The First In(OTf) -Catalyzed Conversion of Kinetically Formed Homoallylic Alcohols into the Thermodynamically Preferred Regioisomers: Application to the Synthesis of 22α-Sterols.首例三氟甲磺酸铟(In(OTf))催化动力学形成的高烯丙醇向热力学更稳定的区域异构体的转化:在22α-甾醇合成中的应用
Angew Chem Int Ed Engl. 2001 Aug 3;40(15):2921-2922. doi: 10.1002/1521-3773(20010803)40:15<2921::AID-ANIE2921>3.0.CO;2-V.
2
The First In(OTf)(3)-Catalyzed Conversion of Kinetically Formed Homoallylic Alcohols into the Thermodynamically Preferred Regioisomers: Application to the Synthesis of 22alpha-Sterols This research was supported by the National University of Singapore.首例三(三氟甲磺酸)铟催化动力学形成的高烯丙醇向热力学更稳定区域异构体的转化:应用于22α-甾醇的合成 本研究得到新加坡国立大学的支持。
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3
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引用本文的文献

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Indium-Mediated 2-Oxonia Cope Rearrangement of 1,4-Dienols to 1,3-Dienols.铟介导的1,4 - 二烯醇向1,3 - 二烯醇的2 - 氧杂环戊二烯Cope重排反应
ACS Omega. 2019 Jan 9;4(1):785-792. doi: 10.1021/acsomega.8b03118. eCollection 2019 Jan 31.
2
Highly (E)-selective BF(3).Et(2)O-promoted allylboration of chiral nonracemic alpha-substituted allylboronates and analysis of the origin of stereocontrol.高对映选择性的 BF(3).Et(2)O 促进的手性非外消旋的 α-取代烯丙基硼酸酯的烯丙基硼化反应及立体控制起源分析。
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