Synthesis of huge macrocycles using two calix[4]arenes as templates
作者:Yudong Cao、Leyong Wang、Michael Bolte、Myroslav O. Vysotsky、Volker Böhmer
DOI:10.1039/b505223h
日期:——
Macrocycles with up to 100 atoms have been synthesised using two calix[4]arenes as templates: first, (3,5-dialkenyloxy)phenyl groups are attached to the wide rim of a calix[4]arene via urea links, then the alkenyl groups are connected via a metathesis reaction using a tetratosylurea calix[4]arene for their correct prearrangement and finally the urea functions are cleaved to detach the newly formed