反应详情

In a similar reaction as in 1 above, 100 ml toluene, sodium (39.5 g, 1.72 mole), 7-methyl-octanoate (52 g, 0.29 mole), and 260 ml anhydrous methanol reacted to yield 7-methyl-1-octanol (44.3 g, yield rate 85%); 7-methyl-1-octanol (44.3 g, 0.31 mole) reacted with chloro-chromic pyridine (100 g, 0.465 mole) to yield 7-methyl-octanaldehyde (31 g, yield rate 70%); and finally, 7-methyl-octanaldehyde (20 g, 0.14 mole), malonic acid (15 g, 0.14 mole), and 15 ml pyridine were added together and refluxed with heating for 3 hours. After cooling down 15 ml 30% sulfuric acid was added and the reaction mixture was stirred for 3 hours under ice bath and then extracted by diethyl ether. Diethyl ether was removed by evaporation and product was subject to vacuum fractional distillation and 122° C./1.5 mmHg fraction was collected as 9-methyl-2-decenoic acid (16 g, yield rate 80%).

1. customIn a similar reaction as in 1 above