3 5 R= NOp stitution, respectively, in benzene rings. Spin decoupling experiments, in which all doublets and multiplets were decoupled, confirmed this assignment. 4'-Hydroxy analogue 2p was prepared both by the method described above and by cleaving the ether linkage of the 4 '-methoxy derivative 21 with HBr in acetic acid. 4'-Carboxylate 2dd (Table 11) was prepared in good yield by acid-catalyzed hydrolysis of the corresponding nitrile (2q; Table ...
[Shinkai, Seiji; Kawanabe, Sayuri; Kawase, Akito; Yamaguchi, Toshiro; Manabe, Osamu; et al. Bulletin of the Chemical Society of Japan, 1988 , vol. 61, # 6 p. 2095 - 2102]
[Shinkai, Seiji; Kawanabe, Sayuri; Kawase, Akito; Yamaguchi, Toshiro; Manabe, Osamu; et al. Bulletin of the Chemical Society of Japan, 1988 , vol. 61, # 6 p. 2095 - 2102]