反应详情

The 0.82 g (0.0050 moles) of 2,6-dichloropyridine N-oxide and 0.80 g (90%) (0.0050 moles) of 3,5,5-trimethyl-1-hexanol was reacted with 0.206 g (0.0050 moles) of ground sodium hydroxide in 8.2 ml of DMSO at 80° C. for 8.5 hours to give 2-chloro-6-(3,5,5trimethylhexyloxy)pyridine N-oxide. It was reacted with 0.600 g (0.015 moles) of ground sodium hydroxide at 80° C. for 4 hours to give 1-hydroxy-6-(3,5,5-trimethyl-hexyloxy) pyridine-2(1H)-one. After cooling, it was added 74 ml of water and was adjusted with 6N HCL to pH 3. The precipitate was filtered and washed with water to give 0.577 g (45%). It was recrystallized from ethyl acetate and hexanes: mp 130.5°-131° C.