Abstract
AbstractA simple and elegant synthesis of some novel bis‐spiro pyranopyrazoles has been achieved via the condensation reaction between bis‐isatins, malononitrile, hydrazine hydrate and ß‐ketoester derivatives in the presence of a catalytic amount of 1, 4‐diazabicyclo [2.2.2] octane (DABCO) in ethanol at reflux conditions. The significant features of the present method are structure diversity, product complexity, procedure and work‐up simplicity, environmentally friendly, good to excellent yields and catalyst recyclability.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.