Regioselective Electrophilic Access to Naphtho[1,2-b:8,7-b′]- and -[1,2-b:5,6-b′]dithiophenes

A two-step one purification access to dichloronaphtho[1,2-b:8,7-b′] and [1,2-b:5,6-b′]dithiophenes using bis-alkylnaphthyl alkynes and phthalimidesulfenyl chloride as starting materials has been developed. The functionalization of the carbon-chlorine bonds allowed further modification of NDT core, broadening the potential of the methodology. © 2013 American Chemical Society.