a-Ethandione with a-hydrogen wil proceed condensation C-C-CH CH C-C-CH3 OH OH CH3 -hO CH3 -,O CH2-C CH2c-c OO C-C-CH CH3-C-CCH3 C C CH3 O O OH - H2O CH3 C C CH3 O O C C CH3 O O CH3 C C CH3 O H2O OH - C C CH3 O CH3 C C O α-Ethandione with α- hydrogen will proceed condensation