1,3-Alternate calix[4]arenes, selectively functionalized by amino groups
作者:Crenguta Danila、Michael Bolte、Volker Böhmer
DOI:10.1039/b414173c
日期:——
synthesize calix[4]arenes which are fixed in the 1,3-alternate conformation and substituted selectively by amino groups. These derivatives are useful starting materials for the attachment of various groups via amide bonds, as demonstrated by several examples, but may be converted also to ureas, imides or azomethines. Four amino groups may be attached to the narrow rim via(several) methylene groups as spacer