Anil Shrikrishna Modak

Asymmetric synthesis of highly functionalized polyazamacrocycles via reduction of cyclic peptide precursors

Abstract A general synthetic method for the preparation of carbon-functionalized polyazamacrocycles from the corresponding cyclic peptides is described.

Terpyridyl derivatives as bifunctional chelates: synthesis and crystal structures of 4′-[2-(1,3-dioxolan-2-yl)ethylsulfanyl]-2,2′∶6′,2″-terpyridine and chloro(4′-methylsulfanyl-2,2′∶6′,2″-terpyridine)gold(III) bis(trifluoromethanesulfonate)†

A variety of 2,2′∶6′,2″-terpyridine (terpy) derivatives modified at the 4′ position has been synthesized to generate bifunctional chelates. A particularly convenient route to these bifunctional chelates, based on nucleophilic substitution of 4′-chloroterpyridine is described. The crystal structure of 4′-[2-(1,3-dioxolan-2-yl)ethylsulfanyl]-2,2′∶6′,2″-terpyridine has been determined. The palladium(II) and gold(III) complexes of the analog with an SMe group at the 4′ position have been synthesized and characterized. The crystal structure of the latter has been determined.