Yunkyung Jeong, Do-Young Kim, Yunsil Choi and Jae-Sang Ryu
Org. Biomol. Chem., 2011,9, 374-378
DOI:
10.1039/C0OB00701C,
Communication
The SO3H-tethered imidazolium and triazolium salts, nonvolatile and recyclable Brønsted acidic