发明名称 |
PREPARATION OF 4,6-DIAMINORESORCINOL THROUGH A BISAZOARYLRESORCINOL INTERMEDIATE |
摘要 |
The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range of -5.degree.C to -60.degree.C. The present invention is also a method of preparing a 2-substituted 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt with a 2-substituted resorcinol. The 4,6-bisarylazoresorcinol or 2-substituted 4,6-bisarylazoresorcinol can then be hydrogenated to a 4,6-diaminoresorcinol, which is a precursor to polybisbenzoxazoles (PBOs), polymers which are useful as insulators, solar arrays, and tear-resistant gloves.
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申请公布号 |
CA2183454(A1) |
申请公布日期 |
1995.08.31 |
申请号 |
CA19952183454 |
申请日期 |
1995.02.10 |
申请人 |
DOW CHEMICAL COMPANY (THE) |
发明人 |
MORGAN, TED A.;NADER, BASSAM S.;VOSEJPKA, PAUL;WU, WESHI;KENDE, ANDREW S. |
分类号 |
B01J23/44;C07B61/00;C07C213/02;C07C215/82;C07C245/08;C09B41/00;(IPC1-7):C07C215/80;C07C213/00 |
主分类号 |
B01J23/44 |
代理机构 |
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