Directed β-C(sp3)#H iodination and arylation of ketones
申请人:The Scripps Research Institute
公开号:US10875822B2
公开(公告)日:2020-12-29
This invention discloses the first example of palladium(II)-catalyzed β-C(sp3)-H iodination or arylation of a wide range of ketones by using a commercially available aminooxyacetic acid auxiliary. This L, X-type directing group overcomes the limitation of the transient directing group approach for -βC(sp3)-H functionalization of ketones. Practical advantages of this method include simple installation of the auxiliary without chromatography, exceptional tolerance of a-functional groups, double bonds and triple bonds and rapid access to diverse sterically hindered quaternary centers.
本发明首次公开了利用市售的氨基氧乙酸助剂,通过钯(II)催化β-C(sp3)-H碘化或芳基化多种酮的实例。这种 L、X 型定向基克服了瞬时定向基在酮的βC(sp3)-H 功能化方面的局限性。这种方法的实际优势包括:无需色谱法即可简单地安装辅助剂,对 a 官能基、双键和三键具有极强的耐受性,以及可快速获得各种立体受阻的季中心。
[EN] DIRECTED B-C(SP3)-H IODINATION AND ARYLATION OF KETONES<br/>[FR] IODATION DIRIGÉE DE B-C(SP3)-H ET ARYLATION DE CÉTONES
申请人:SCRIPPS RESEARCH INST
公开号:WO2019036349A8
公开(公告)日:2019-05-09
Directed Beta-C(sp3)–H Iodination and Arylation of Ketones
申请人:The Scripps Research Institute
公开号:US20200255363A1
公开(公告)日:2020-08-13
This invention discloses the first example of palladium(II)-catalyzed β-C(sp
3
)-H iodination or arylation of a wide range of ketones by using a commercially available aminooxyacetic acid auxiliary. This L, X-type directing group overcomes the limitation of the transient directing group approach for -βC(sp
3
)-H functionalization of ketones. Practical advantages of this method include simple installation of the auxiliary without chromatography, exceptional tolerance of a-functional groups, double bonds and triple bonds and rapid access to diverse sterically hindered quaternary centers.
Highly Versatile β-C(sp<sup>3</sup>)–H Iodination of Ketones Using a Practical Auxiliary
作者:Ru-Yi Zhu、Luo-Yan Liu、Jin-Quan Yu
DOI:10.1021/jacs.7b06851
日期:2017.9.13
The first example of palladium(II)-catalyzed β-C(sp3)–H iodination of a wide range of ketones using a commercially available aminooxyacetic acid auxiliary has been achieved. This L, X-type directing group overcomes the limitations of the transient directing group approach for C(sp3)–H functionalization of ketones. Practical advantages of this method include simple installation of the auxiliary without