反应详情

The 4-bromo-1-naphthoic acid required as starting material according to the process according to the invention has already been described in the literature. It can, for example, be prepared in a simple manner by reacting 1-bromonaphthalene with acetyl chloride in a Friedel-Crafts reaction to give 4-bromo-1-acetylnaphthalene (see K. Dziewouski and L. Sternback, Bull. acad. polonaise A, 1931, 59 to 68, or T. L. Jacobs, S. Winstein, J. W. Ralls and J. H. Robson Journ. org. chem. 11 (1946), 27-33) and by oxidation of the latter compound with hypochlorite [see T. L. Jacobs et. al, see above, or N. J. Leonard and A. M. Hyson, J. Am. chem. soc. 71 (1949), 1963].

1. customin a Friedel-Crafts reaction