Capsaicin and(E)-4-hydroxy-3-methoxybenzyl-8-methylnon-6-enoate were important intermediate of medicine.This research proposed a new method for synthesizing them from 6-bromohexanoic ester by Wittig reaction to give(Z...Capsaicin and(E)-4-hydroxy-3-methoxybenzyl-8-methylnon-6-enoate were important intermediate of medicine.This research proposed a new method for synthesizing them from 6-bromohexanoic ester by Wittig reaction to give(Z)-8-methyl-6-nonenoic acid(4),then treated by nitrous acid and NaNO2 to induce Z→E isomerization reaction of the carbon-carbon double bond,then followed by condensation reaction to give product in an overall yield of 31%.The method is more convenient than traditional methods.展开更多
文摘Capsaicin and(E)-4-hydroxy-3-methoxybenzyl-8-methylnon-6-enoate were important intermediate of medicine.This research proposed a new method for synthesizing them from 6-bromohexanoic ester by Wittig reaction to give(Z)-8-methyl-6-nonenoic acid(4),then treated by nitrous acid and NaNO2 to induce Z→E isomerization reaction of the carbon-carbon double bond,then followed by condensation reaction to give product in an overall yield of 31%.The method is more convenient than traditional methods.
