Efficient Synthesis of Imino-methano Tröger Bases by Nitrene Insertions into C–N Bonds
摘要:
A direct nitrene insertion into C-N bonds is observed upon treatment of methano-Troger bases with arylsulfonyl iminophenyliodinanes under copper and dirhodium catalysis. Novel cyclic imino-methano Troger bases are obtained (55-88%). Enantiopure products (ee >= 99%) can be obtained with tailored substrates.