Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1270060 | Ultrasonics Sonochemistry | 2012 | 7 Pages |
This project was undertaken to demonstrate the potential of iodobenzene diacetate for the oxidative aromatization of Hantzch-1,4-dihydropyridines under ultrasonic irradiation. All reactions were carried out under ultrasonic irradiation and results were compared with traditional method. Sonochemical switching was observed in case of oxidative aromatization of 4-n-alkyl substituted 1,4-DHP. Without sonication, dealkylation occurred in case of n-alkyl substituted 1,4-DHP (ionic mechanism) but under ultrasonic irradiation, n-alkyl group was not expelled (radical mechanism). However, secondary alkyl (isopropyl) and benzyl group were expelled under both conditions.
► The potential of IBD was demonstrated under ultrasonic irradiation. ► The oxidation of 1,4-DHP was carried out by IBD. ► The sonochemical switching was observed in case of oxidative aromatization of 4-n-alkyl substituted 1,4-DHP.