General Considerations • Unsaturated fatty acids [RH] main reactant Energy for H removal (kcal/mole) H - CH 2 - CH2 - CH 3 H - CH = CH2 H - CH 2 - CH = CH 2 CH2 = CH - CH - CH = CH 2 H 100 103 85 65 → H on carbon next to double bond easier to removeGeneral Considerations • Unsaturated fatty acids [RH] main reactant Energy for H removal (kcal/mole) H - CH 2 - CH2 - CH 3 H - CH = CH2 H - CH 2 - CH = CH 2 CH2 = CH - CH - CH = CH 2 H 100 103 85 65 → H on carbon next to double bond easier to remove