Oxymetalation. 20. Conversion of cyclopropanes into 1,2-dioxolanes via tert-butyl peroxymercuration, bromodemercuration, and silver salt induced cyclization
Oxymetalation. 20. Conversion of cyclopropanes into 1,2-dioxolanes via tert-butyl peroxymercuration, bromodemercuration, and silver salt induced cyclization
Oxacycle Synthesis via Intramolecular Reaction of Carbanions and Peroxides
作者:Rachel Willand-Charnley、Benjamin W. Puffer、Patrick H. Dussault
DOI:10.1021/ja5026276
日期:2014.4.23
The intramolecular reaction of dialkyl peroxides with carbanions, generated via chemoselective metal-heteroatom exchange or deprotonation, provides a newapproach to cyclicethers. Applied in tandem with C–C bond formation, the strategy enables a one-step annelation to form oxaospirocycles.
General [4 + 1] Cyclization Approach To Access 2,2-Disubstituted Tetrahydrofurans Enabled by Electrophilic Bifunctional Peroxides
作者:Min Gao、Yukun Zhao、Chen Zhong、Shengshu Liu、Pengkang Liu、Qi Yin、Lin Hu
DOI:10.1021/acs.orglett.9b02012
日期:2019.7.19
function as unique electrophilic oxygen synthons, for the synthesis of a broad range of 2,2-disubstituted tetrahydrofurans is achieved under operationally simple conditions. The unprecedented asymmetric version of such reaction is also realized via chiral auxiliary-assisted cyclization, thus providing a distinct approach to access chiral tetrahydrofurans with high diastereoselectivities. The new method