t‐Butyl N‐(3‐thienyl)carbamate has been brominated, and neopentyl N‐(3‐thienyl) carbamate has been chlorinated, brominated, iodinated, acetylated, nitrated, and coupled with a diazonium salt. In all cases the incoming substituent was shown by NMR spectrum to be in the 2‐position. Copyright © 1968 Wiley‐Liss, Inc., A Wiley Company