Anisole → 4-Bromoanisole

The bromination of anisole with one equivalent of bromine is chloroform, at room temperature, is reported to give an 80% yield of monobromoanisole. Grignard, Bellet and Courtot, Ann. Chim. 4, 28 (1915). The preparation of dibromoanisole from anisole, and of tribromoanisole from dibromoanisole, in carbon tetrachloride, is also reported. Kohn and Sussman, Monatsh. Chem. 46, 575 (1925). "Several days" reaction time is reported for the preparation of several tribromophenyl alkyl ethers. Yields are not reported. Baiford and Birosel, J. Am. Chem. Soc., 51, 1776 (1929). The bromination of anisole with three equivalents of bromine yields 1.5% tribromoanisole. Similarly, the bromination of monobromoanisole with two equivalents of bromine in chloroform is reported to give only small quantities of tribromoanisole, and tribromoanisole is reported not to brominate further. D. M. Birosel, Univ. Phillipines Natural Applied Sci. Bull. 1, 145 (1931).

1. customat room temperature

ORDレコード

ord-b3cef7a29b304f9cb7de60fa5db6d751

出典データセット

uspto-grants-1980_09

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04223169