Abstract
Several 1,3-disubstituted 1,4-dihydropyridines with dimethyl acetylenedicarboxylate in acetonitrile at room temperature gave 1,4,4a,6a-tetrahydrocyclobuta[b]pyridines and where a 3-carboxy- or a 3-carbamoyl group was present, a novel cycloelimination of this group occurred to give the corresponding 3-(cis-1,2-dimethoxycarbonylvinyl) derivative. 1-Benzyl-1,4-dihydroquinoline-4-carbonitrile gave the 3-(cis-1,2-dimethoxycarbonylvinyl) derivative quantitatively, and 2-benzyl-1,2-dihydroisoquinoline-1-carbonitrile formed a phenanthridine.
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 callMore From: Journal of the Chemical Society, Perkin Transactions 1
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.
