Thermal [2 + 2] Cycloaddition of Morpholinoenamines with C60 via a Single Electron Transfer
摘要:
The thermal reaction of C-60 with five- and six-membered morpholinocycloalkenes in refluxing toluene exclusively gave the [2 + 2] cycloadducts In high yields. However, a seven-membered homologue sluggishly reacted with C-60 because of the increasing steric hindrance. This cycloaddition reaction is likely to proceed via a single electron transfer (SET), a radical-coupling, and subsequent ion cyclization rather than the prior proton transfer between the radical ions.
Thermal [2 + 2] Cycloaddition of Morpholinoenamines with C60 via a Single Electron Transfer
摘要:
The thermal reaction of C-60 with five- and six-membered morpholinocycloalkenes in refluxing toluene exclusively gave the [2 + 2] cycloadducts In high yields. However, a seven-membered homologue sluggishly reacted with C-60 because of the increasing steric hindrance. This cycloaddition reaction is likely to proceed via a single electron transfer (SET), a radical-coupling, and subsequent ion cyclization rather than the prior proton transfer between the radical ions.