1,1′-Butylenebis(3-sulfo-3H-imidazol-1-ium) hydrogensulfate: a versatile task-specific ionic liquid catalyst for the synthesis of 4H-pyran scaffolds through non-conventional process

• Main Authors: Khaligh, Nader Ghaffari, Ong, Chiu Ling, Mihankhah, Taraneh, Johan, Mohd Rafie, Juan, Joon Ching
• Format: Article
• Published: Springer Verlag 2019
• Subjects: QD Chemistry; TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.um.edu.my/24234/; https://doi.org/10.1007/s00706-018-2336-2

Abstract: In the present study, the catalytic efficiency of 1,1′-butylenebis(3-sulfo-3H-imidazol-1-ium) hydrogensulfate (BBSI-HSO 4 ) as a versatile sulfonic acid-functionalized ionic liquid was demonstrated for the one-pot mechanosynthesis of pyrano[4,3-b]-pyrans using planetary ball mill at room t...