 under carbonylative conditions , neutral 
 rh(i)-systems modified 
 with weak donor ligands ( asph3 or 1,4-oxathiane ) undergo 
 n - cbz , n - benzoyl , or n - ts directed insertion into the proximal c  c 
 bond of aminomethylcyclopropanes to generate rhodacyclopentanone 
 intermediates . 
 these are trapped by n - tethered alkenes to provide 
 complex perhydroisoindoles . 
Supplementary Material