Electron Transfer Driven Addition of Ketimine Derived Radicals to Arene-Cr(CO)3 Complexes

All articles of this category The first examples of SmI 2 mediated radical cyclizations of ketimines have been achieved with η 6 -arene-Cr(CO) 3 complexes bearing ketimine sidechains. The cyclization products were obtained in high yield and with significant diastereoselectivity. The reactions seem to proceed via addition of azaketyl-type radicals to the complexed arenes to form 17 VE intermediates which are trapped by single electron transfer to give the corresponding (anionic) 18 VE species. chromium complexes - radical cyclization - samarium(II)iodide - electron transfer - ketimines