反应详情

To a solution of the above 2-(2-methyl-propenyl)-6-vinyl-isonicotinic acid tert-butyl ester (444 mg, 1.71 mmol) in methanol (15 mL), Pd/C (50 mg, 10% Pd) is added and the mixture is stirred under 1 atm of H2 at rt for 15 h. The catalyst is filtered off and the filtrate is evaporated. The remaining residue is purified by CC on silica gel eluting with heptane:EA 5:1 to give 2-ethyl-6-isobutyl-isonicotinic acid tert-butyl ester (391 mg) as a colourless oil; LC-MS: tR=1.15 min, [M+1]+=264.11.

1. filtrationThe catalyst is filtered off
2. customthe filtrate is evaporated
3. customThe remaining residue is purified by CC on silica gel eluting with heptane:EA 5:1