... atom of 2 by a methylamino group10 is an JbVlOUS improvement of older methods to obtain [Q and MeIQ (3).“'13 The latter methods in- zolved N-methylation in the last step of the syn l04 Acta Chemica Scandinavica B40 (1986 ... Nyhammar, T. and Grivas, S. Acta Chem. ... Chem. ...