Consider the following reaction of boron trifluoride `(BF_3)` and acetone:

what is the critical HOMO (nucleophile) of this reaction?

Answer

Aromatic-3,4,5,9, 12, 13, 15, 16, 17, 19, 22, 24, 25, 26,27, 28, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 53, 54, 56, 57, 58, 61, 62, 63, 66
Non-aromatic — 1, 6, 7, 8, 18, 20, 23, 30, 40, 55, 64, 65
Anti-aromatic-2, 10, 11, 14, 21, 36, 52, 59, 60