Abstract
AbstractWe report an acid‐catalyzed cycloaddition reaction of hydrazones with β‐bromo‐ or β‐chloro‐β‐nitrostyrenes for the regioselective synthesis of 4‐nitro‐ or 4‐chloro‐tetrasubstituted pyrazoles. Arising from a common 4‐halo‐4‐nitropyrazolidine intermediate, the identity of the pyrazole product formed is dependent on the relative leaving group abilities of the halo and nitro substituents.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
