Abstract
The (OHO) +-type cationic heteroconjugation equilibria have been studied in systems consisting of substituted pyridine N-oxides and trimethylamine N-oxide in the polar protophobic aprotic solvent, propylene carbonate. The highest values of heteroconjugation constants, log K BHBl + , oscillating around the value equal to 4, were obtained in systems where both the proton donor and proton acceptor had comparable basicities. A comparison of the cationic heteroconjugation constants determined in propylene carbonate with those determined in the less polar acetonitrile led to the conclusion that the increased polarity of the aprotic solvent enhanced the tendency towards cationic heteroconjugation.
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.