Cyclodienones. X. Reaction of Halo-cyclohexadien-1-ones with Phenols in the Presence of α-Picoline and Preparation of 4-Hydroxy- and 2-Hydroxyphenyl Aryl Ethers
作者:Masashi Tashiro、Takashi Itoh、Gouki Fukata
DOI:10.1246/bcsj.57.416
日期:1984.2
Reaction of 4-halocyclohexadienones such as 4-bromo-(1a), 4-chloro-2,4,6-tri-t-butyl-(1b), 2,4-dichloro-4,6-di-t-butyl-2,5-cyclohexadien-1-one, and 2,4-dichloro-2,6-di-t-butyl-3,5-cyclohexadien-1-one with phenols in the presence of α-picoline was carried out under various conditions. The reaction of 1a and 1b with phenols afforded the corresponding 2-aryloxy-4,6-di-t-butyl phenols together with various
4-卤代环己二烯酮如4-溴-(1a)、4-氯-2,4,6-三叔丁基-(1b)、2,4-二氯-4,6-二叔丁基的反应-2,5-环己二烯-1-酮和2,4-二氯-2,6-二叔丁基-3,5-环己二烯-1-酮在α-甲基吡啶存在下与苯酚进行各种条件。1a 和 1b 与苯酚反应得到相应的 2-芳氧基-4,6-二叔丁基苯酚以及各种副产物。由上述反应得到的 2-芳氧基-4,6-二-叔丁基-苯酚在 AlCl3 催化下发生叔丁基转移反应,得到相应的 2-羟基苯基芳基醚。4-芳氧基-2,4,6-三叔丁基-2,5-环己二烯-1-酮的类似反应也得到相应的4-羟基苯基芳基醚。