C. Simon et al., THE FIRST PREPARATION OF 6-BETA-BROMO CODEINE AND MORPHINE DERIVATIVES - KINETIC VS. THERMODYNAMIC CONTROL, Journal of chemical research. Synopses, (12), 1997, pp. 437
Starting from the hydrogen halide salts of morphine and codeine deriva
tives, 6 alpha-halogeno(Cl,Br)-substituted codeine and morphine deriva
tives have been prepared under Mitsunobu conditions.