Ehrlich-Sachs Reaction.
P. Ehrlich and F. Sachs, Ber. 32, 2341 (1899)
F. Barrow and F. J. Thorneycroft, J. Chem. Soc. 1939, 769
McGookin, J. Appl. Chem. 5, 65 (1955)
Bell, J. Chem. Soc. , S16; Anderson, Bell, ibid. 1959, 3708
Anderson, Duncan, ibid. 1961, 1631.