Journal
ARABIAN JOURNAL OF CHEMISTRY
Volume 11, Issue 7, Pages 1053-1060Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.arabjc.2017.05.016
Keywords
Bis-hydrazonoyl chlorides; Spiro-pyrazolines; Ultrasonic irradiation; 1,3-Dipolar cycloaddition
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Funding
- University of Kuwait [SC06/15]
- [GS01/01]
- [GS01/05]
- [GS01/03]
- [GS03/08]
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Bis-[3-methyl-1,1',4'-triaryl-5-oxo-spiro-pyrazoline-4,5'-pyrazoline] derivatives are synthesized regio- and stereoselectively via 1,3-dipolar cycloaddition of the bis-hydrazonoyl chlorides with 4-arylidenepyrazol-5-one derivatives. The cycloaddition route is optimized under both ultrasonic irradiation and conventional heating modes. The regio- and stereoselectivity of the cycloadducts are confirmed by spectral and X-ray crystallographic analysis. (C) 2017 The Authors.
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