Studies with arylhydrazonopyridinones: Synthesis of new arylhydrazono thieno[3,4-c]pyridinones as novel D2T2 dye class; classical verse green methodologies

Khadijah M Al-Zaydi; Rita M Borik; Mohamed H Elnagdi

doi:10.1016/j.ultsonch.2008.11.004

Studies with arylhydrazonopyridinones: Synthesis of new arylhydrazono thieno[3,4-c]pyridinones as novel D2T2 dye class; classical verse green methodologies

Ultrason Sonochem. 2009 Jun;16(5):660-8. doi: 10.1016/j.ultsonch.2008.11.004. Epub 2008 Nov 21.

Authors

Khadijah M Al-Zaydi¹, Rita M Borik, Mohamed H Elnagdi

Affiliation

¹ Department of Chemistry, Girl's College of Education, Jeddah, P.O. Box 50918, Jeddah 21533, Saudi Arabia. Alzaydi_kh@yahoo.com

PMID: 19112037
DOI: 10.1016/j.ultsonch.2008.11.004

Abstract

A variety of arylhydrazonopyridinones were prepared via heating cyanoacetamides with ethyl acetoacetate in absence of solvent under reflux conventionally or ultrasound irradiation or in a microwave oven. The formed products 5 and 6 could be readily converted to thienopyridones. Attempted addition of the latter to electron poor olefins afforded only arylhydrazonopyridinones.