41. The methylglyoxal molecule consists of two carbonyl groups flanked by a hydrogen atom and a methyl group. 42. As can be seen from the structural formulae, this process replaces an iminium group with a carbonyl group . 43. Hydrogen bonds also connect carbonyl groups on the inhibitor to the water molecule linked to Ile50 and Ile50? 44. The Criegee intermediate leads to a product that is only labelled on the oxygen of the carbonyl group . 45. Ketoses can isomerize into an aldose when the carbonyl group is located at the end of the molecule. 46. Deprotonation encourages the reformation of the carbonyl group in the thioester intermediate and ejection of the hydride ion. 47. Widely employed applications of migratory insertion of carbonyl groups are hydroformylation and the carbonylative production of acetic acid. 48. The carbonyl group is responsible for a strong interaction with the receptor and contributes significantly to the binding process. 49. But Painter has proposed that an unusual oxopolysaccharide _ a sugar with reactive carbonyl groups attached _ is responsible. 50. In synthon terminology the ordinary carbonyl group is an acyl cation and the dithiane is a masked acyl anion.
