Development of regioselective [2 + 3] cycloaddition reactions of nitrile oxides with alkenes using intramolecular reactions through oxime groups [1]
作者:Nao Umemoto、Ayumi Imayoshi、Kazunori Tsubaki
DOI:10.1016/j.tet.2022.132833
日期:2022.8
oxime group and demonstrated their intramolecular [2 + 3] cycloaddition reactions. The desired cycloadducts were obtained in high yields and as single regioisomers. Furthermore, face-selective cycloaddition reactions were achieved by introducing a stereocenter into the linker moiety, affording the desired cycloadducts with good diastereoselectivity.
Development of Regio- and Face-selective [2 + 3] Cycloaddition Reactions of Readily Preparable Oxime-substituted Nitrile Oxides with Silicon-linked Allylic-alcohol Moieties for Intramolecular Reactions
作者:Nao Umemoto、Ayumi Imayoshi、Kazunori Tsubaki
DOI:10.1246/cl.220258
日期:2022.9.5
typically prepared in situ from nitroalkanes and converted to 2-isoxazoline heterocycles upon [2 + 3] cycloaddition with alkenes, providing synthetically useful intermediates such as β-hydroxy ketones and γ-amino alcohols. Herein, we prepared oxime-substituted nitrile oxides bound to allylic-alcohol derivatives through a silicon atom and demonstrated their intramolecular cycloaddition reactions. The desired