Noun
cyclopropanation (plural cyclopropanations)
(organic chemistry) Any reaction that introduces a cyclopropane ring into a compound.
Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
In summary, the cyclopropanation reaction of rhodium-stabilized vinylcarbenoids has great utility since it is highly diastereoselective, and the resulting vinylcyclopropanes are versatile synthetic intermediates.
Cyclopropanation of C 60 mostly occurs at the junction of 2 hexagons due to steric factors. Source: Internet