Citation:
ZHANG Qianfeng, TANG Anbin, HUANG Jie, MA Hanbing, YANG Yuchuan. Synthesis of Bis(3-amino-4-hydroxyphenyl) Bisphenol Ether[J]. Chinese Journal of Applied Chemistry,
;2013, 30(9): 986-992.
doi:
10.3724/SP.J.1095.2013.20501
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Four monomers of polybenzoxazole having the structure of bisphenol aromatic ether,bis(3-amino-hydroxyphenyl) bisphenol ether,were prepared from bisphenols and 4-chloro(or bromo)-phenol by successive 4 steps of synthetic routes including benzyl protection,Ullmann reaction, selective nitrification and reduction-deprotection. The effect of reaction conditions on the Ullmann reaction was investigated. The high region selection of the nitrification is confirmed. The process of after-treatment of the reduction-deprotection was optimized and the quality and yield of the product were improved. The total yield of 4 steps reaction can reach up to 54.0%. The target compound and its intermediates were characterized by means of IR,1H NMR and HRMS.
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