WANG Xuede, HUANG Xue, LIU Shuai, et al. Catalytic epimerization of hydrochloric acid-ferric chloride of sesamin to synthesis of asarinin and its mechanism[J]. CIESC Journal, 2015, (S2): 455-460.
WANG Xuede, HUANG Xue, LIU Shuai, et al. Catalytic epimerization of hydrochloric acid-ferric chloride of sesamin to synthesis of asarinin and its mechanism[J]. CIESC Journal, 2015, (S2): 455-460.DOI: 10.11949/j.issn.0438-1157.20151447.
ferric chloride and hydrochloric acid-ferric trichloride as catalyst
the epimerization of sesamin and asarinin were preliminary investigated and attempt to probe into the possible mechanism.The structure of the composite was identified by NMR and MS.The results showed that the reaction reach to equilibrium with 20% hydrochloric acid;it didn't work with only ferric trichloride as catalyst which was easy to hydrolysis; Using hydrochloric acid-ferric chloride as catalyst
use less quantity(the mass fraction of 0.05%-0.5%)can achieve better catalytic effect
reaction temperature should be above the boiling point of the reaction system of ethanol
reaction can be completed within 10 min.Combined catalyst to reduce the activation energy of the reaction system
accelerate the sesamin isomerization process for asarinin.