Regioselective Radical Additions to 7-Oxabicyclo[2.2.1]hept-5-en-2-one
作者:Jean-Paul Vionnet、Kurt Schenk、Philippe Renaud
DOI:10.1002/hlca.19930760708
日期:1993.11.3
Radicaladdition to 7-oxabicylco[2.2.1]hept-5-en-2-one (1) was examined from a regiochemical point of view, and despite the small electronic anisotropy of the double bond, electrophilic radicals were found to add preferentially at C(5) with selectivities of up to 5:1. We also report the first case of an inversion of the regioselectivity of a radical reaction using Lewis acids.
Access to γ‐Iodo‐gem‐Diborylated Cyclopentanes and to Bicyclic Cyclopropanes
作者:Dace Circule、Fabrice Dénès、Philippe Renaud
DOI:10.1002/adsc.202400340
日期:2024.7.2
using Matteson67-69 and Zweifel64 as well as Suzuki-Miyaura70, 71 cross-coupling reactions.65-73 Recently, we briefly explored the formation of bicyclo[3.1.0]hexanes from ATRAn product (Scheme 1, A).8 The bicyclo[3.1.0]hexane skeleton monoalkylated at the bridgehead position is found in many natural products such as thujone, sabinene, and related terpenoids. The reaction was low yielding due to the stereoelectronic