The Richman-Atkins cyclization remains one of the most widely used methods for the preparation of macrocyclic polyamines. The use of β-trimethylsilylethanesulfonamides (SES- sulfonamides) for the preparation of polyazamacrocyclic compounds is described. This expands existing Richman-Atkins sulfonamide macrocyclization methodology, and it successfully enables preparation of labile polyaza [n](1, 4) naphthalenophanes and ...
[Choi, Heung-Jin; Bae, Yoon-Kyung; Kang, Seok-Chan; Sil Park, Yeon; Won Park, Joon; Kim, Woong-Il; Bell, Thomas W Tetrahedron Letters, 2002 , vol. 43, # 51 p. 9385 - 9389]