Acetylenic nanoarchitecture

This protocol is applied to the synthesis of the starting monomers for acetylenic nanoarchitectures. For example, geminally bis-deprotected teti aethynylethene 97 is prepared by Pd-catalyzed alkynylation followed by deprotection with K2CO3 in MeOH [Eq. (36)] [54c]. Perethynylated ethene 97 is a synthetic precursor of expanded radialenes, which are novel carbon-rich materials. 

MeOH or a source of fluorine, such as KF, KF-crown ether, TASF, or "Bu4NFt P to give terminal acetylenes. This protocol is apphed to the synthesis of the starting monomers for acetylenic nanoarchitectures, such as ring and dendrimer molecules. 

---