Abstract
The mono- (5a), bis- (4a and 4b), and tetrakis (1a)-p-cyanomethylcalix[4]arenes as well as the bis(cyanomethyl)calix[6]arene (6a) have been transformed both by acid and base induced hydrolysis to the corresponding p-carboxymethylcalix[4]arenes 5b, 4c, 4d, 2a, and 6b which, in turn, were converted to the methyl (5c, 4e, 4f, 2b) and ethyl (5d, 4g, 2c) esters. The cyanomethyl groups in the sterically hindered compounds 7 and 8 and their corresponding monomers 10 and 11, however, were inert to hydrolysis, even under strenuous conditions. The methyl ester 2b can be converted to the 1,3-dibenzyl ether (3b) and the 1,3-dibenzoate (3c) as well as the tetrabenzyl ether (3a) and tetrabenzoate (3d).
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.
