Synthesis of pyrazolylbisindoles over mesoporous Lewis acidic ZrTUD-1: Potential application in selective Cu2+ colorimetric detection
摘要:
A series of pyrazolylbisindole (PBI) derivatives were prepared by simple condensation of indole and pyrazole aldehyde utilizing amorphous mesoporous ZrTUD-1 having predominant Lewis acid sites. The applicability of pyrazolylbisindolyl derivate as a colorimetric chemosensor with high selectivity toward Cu2+ over other cations were tested. Among heavy and transition metal (HTM) ions in CH3CN solution, the probe only sensed Cu2+ detectable by naked eye. The sensor exhibited a new absorption band at 488 nm (a red shift of 206 nm from 282 nm) with a large colorimetric response and affinity to Cu2+ over other cations tested (Al3+, Pb2+, Cd2+, Mg2+, Mn2+, Zn2+, K+, Fe2+, Ca2+, Cu2+ and Hg2+). (c) 2015 Elsevier B.V. All rights reserved.
Synthesis and anti-microbial activity of pyrazolylbisindoles—Promising anti-fungal compounds
作者:Ganesabaskaran Sivaprasad、Paramasivan T. Perumal、Vaiyapuri R. Prabavathy、Narayanasamy Mathivanan
DOI:10.1016/j.bmcl.2006.09.019
日期:2006.12
A series of pyrazolylbisindole derivatives have been synthesized by reacting substituted pyrazole aldehydes with substituted indoles using phosphotungstic acid, a Keggin type heteropoly acid as catalyst. The synthesized pyrazolylbisindoles were evaluated for anti-microbial activities. The effect of pyrazolylbisindoles on the mycelial growth of plant pathogenic fungi is revealed. Entries 3c and 3d emerged as the most interesting compounds in this series exhibiting excellent anti-fungal activity. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of pyrazolylbisindoles over mesoporous Lewis acidic ZrTUD-1: Potential application in selective Cu2+ colorimetric detection
A series of pyrazolylbisindole (PBI) derivatives were prepared by simple condensation of indole and pyrazole aldehyde utilizing amorphous mesoporous ZrTUD-1 having predominant Lewis acid sites. The applicability of pyrazolylbisindolyl derivate as a colorimetric chemosensor with high selectivity toward Cu2+ over other cations were tested. Among heavy and transition metal (HTM) ions in CH3CN solution, the probe only sensed Cu2+ detectable by naked eye. The sensor exhibited a new absorption band at 488 nm (a red shift of 206 nm from 282 nm) with a large colorimetric response and affinity to Cu2+ over other cations tested (Al3+, Pb2+, Cd2+, Mg2+, Mn2+, Zn2+, K+, Fe2+, Ca2+, Cu2+ and Hg2+). (c) 2015 Elsevier B.V. All rights reserved.