Abstract
New derivatives of dibenzo-18-crown-6 with carboxy groups in the side chain have been obtained by acylation with dibasic acids in the presence of polyphosphoric acid. Both 4′,4″- and 4′,5″-dicarboxydibenzo-18-crown-6's have been obtained by the oxidation of the corresponding diacetyl derivatives and have been separated into the isomers. The 4′,4″- and 4′,5″-diformyldibenzo-18-crown-6's have been obtained by the reaction of dibenzo-18-crown-6 with hexamethylenetetramine in polyphosphoric acid.
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.
