专利名称：Preparation of 4,4-dioxy-substituted stilbenes
英孚少儿英语费用发明人：James P. Coleman
bragging rights申请号：US05/846753
申请日：19771031
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公开号：US04189610A
手机词典java公开日：
19800219
英语神话故事
nomorethan专利内容由知识产权出版社提供
摘要：Dehydrohalogenation-rearrangement of 1,1-bis(4-oxy-substituted aryl)-2-haloethanes to yield 4,4'-dioxysubstituted stilbenes is effected by heating an acidic reaction medium comprising the 1,1-bis(4-oxy- substituted aryl)-2-haloethane dissolved in a solution of an aliphatic carboxylic acid and a carboxylic acid salt. The process is particularly directed to the preparation of 4,4'-dihydroxystilbene from 1,1-bis(4-hydroxyphenyl)-2-chloroethane.
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carrots是什么意思申请人：MONSANTO
boxing day是什么意思>家庭教育心得代理人：Wendell W. Brooks,J. W. Williams, Jr.,J. D. Kennedy
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