ʻO-methoxybenzaldehyde

Mai ka salicylaldehyde e ka hopena methylation me ka dimethyl sulfate.E hoʻohui i 3kg o ka sodium hydroxide i loko o kahi 30% aqueous solution, e hoʻohui i 12.2kg o salicylaldehyde a me 80L o ka wai ma lalo o ka hoʻoulu ʻana, a me ka wela i ka paila.Hoʻohui mālie i ka 12.9kg o dimethyl sulfate, e hoʻomau i ka hoʻonā hopena refluxed no kahi o 3h ma hope o ka hoʻohui ʻana, e hoʻomau i ka reflux no 2-3h ma hope o Chemicalbook, hoʻoluʻu i ka papa aila, holoi me 5% sodium hydroxide solution, a laila holoi me ka wai i ka pH 8 , hoʻohui Anhydrous potassium carbonate ua maloʻo.Ma hope o ka kānana ʻana i ka desiccant, ka distillation ma lalo o ke kaomi hoʻemi ʻia, e hōʻiliʻili i ka distillate ma 120°C (2.0kPa), ʻo ia ka o-methoxybenzaldehyde.Hiki ke hoʻokō ʻia ka hopena methylation i loko o ka toluene solvent, me ka hua o 60%.