A rigid macrocyclic bis-malonate for the regioselective preparation of trans-1 and trans-3 fullerene bis-adducts
摘要:
A macrocyclic bis-malonate incorporating two rigid di(phenylethynyl)silane moieties has been prepared and used to functionalize C-60 in a double Bingel cyclopropanation. Two regioisomeric bis-adducts have been thus obtained, namely the trans-1 and trans-3 isomers. The formation of these specific isomers is favored by both the size of the starting macrocycle and the minimum of strain in the final products. (C) 2013 Elsevier Ltd. All rights reserved.
A rigid macrocyclic bis-malonate for the regioselective preparation of trans-1 and trans-3 fullerene bis-adducts
摘要:
A macrocyclic bis-malonate incorporating two rigid di(phenylethynyl)silane moieties has been prepared and used to functionalize C-60 in a double Bingel cyclopropanation. Two regioisomeric bis-adducts have been thus obtained, namely the trans-1 and trans-3 isomers. The formation of these specific isomers is favored by both the size of the starting macrocycle and the minimum of strain in the final products. (C) 2013 Elsevier Ltd. All rights reserved.