Wagner-Jauregg Reaction

T. Wagner-Jauregg, Ber,63,3213(1930);
Ann. 491,I(1931)
F. Bergmann et al, J. Am. Chem. Soc. 69,1773, 1777,
1779(1947)
K . Adler in Newer Methods of Preparative Organic Chemistry,
English Ed,(Interscience, New York, 1948)p425
M.C. Kloetzel in Organic Reactions IV, 32(194)