Non-decarbonylative photochemical versus thermal activation of Bu<sub>4</sub>N[Fe(CO)<sub>3</sub>(NO)] – the Fe-catalyzed Cloke–Wilson rearrangement of vinyl and arylcyclopropanes
作者:Che-Hung Lin、Dominik Pursley、Johannes E. M. N. Klein、Johannes Teske、Jennifer A. Allen、Fabian Rami、Andreas Köhn、Bernd Plietker
DOI:10.1039/c5sc02342d
日期:——
The base metal complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) catalyzes the rearrangement of vinyl and arylcyclopropanes both under thermal or photochemical conditions to give the corresponding vinyl or aryldihydrofuranes in good to excellent...
Nickel-Catalyzed Rearrangement of 1-Acyl-2-vinylcyclopropanes. A Mild Synthesis of Substituted Dihydrofurans
作者:Roy K. Bowman、Jeffrey S. Johnson
DOI:10.1021/ol052700k
日期:2006.2.1
[reaction: see text] Mild Ni(0)-catalyzed rearrangements of 1-acyl-2-vinylcyclopropanes have been developed. The room-temperature isomerizations afford dihydrofuran products in yields regularly greater than 90%. A highly substituted, stereochemically defined cyclopropane was employed in the rearrangement to evaluate the reaction mechanism. Product analysis indicates that the overall reaction proceeds