While developing our studies on reactions of α-halo ketones with hydrogen sulfide [1, 2], in the present work we examined reactions of iodoacetone (Ia) and 1, 3-diiodoacetone (Ib) with hydrogen sulfide in chloroform at–30 C. The reaction of compound Ia with H2S started instantaneously with abundant liberation of molecular iodine. However, instead of the expected formation of H2C–CH2 bond, iodoacetone (Ia) was reduced to acetone with ...
