发明名称 |
PROCESS FOR THE PREPARATION OF STILBENEDICARBOXYLATE ESTERS |
摘要 |
Disclosed is a process for the preparation of 4,4'-stilbenedicarboxylate esters by a 4-step process starting with an alkyl p-formylbenzoate and utilizing intermediate phosphite and phosphonate compounds. The steps comprise: (1) preparing an alkyl p-(hydroxymethyl)benzoate by hydrogenating an alkyl p-formylbenzoate; (2) contacting the alkyl p-(hydroxymethyl)benzoate of step (1) with a trialkyl phosphite to obtain a phosphite ester compound having formula (IV); (3) contacting the phosphite ester of step (2) with a catalytic amount of iodine to rearrange the phosphite ester to the corresponding phosphonate ester; and (4) contacting the phosphonate ester compound of step (3) with an alkyl p-formylbenzoate in the presence of an alkali metal alkoxide and an inert solvent to obtain the dialkyl 4,4'-stilbenedicarboxylate.
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申请公布号 |
CA2214655(A1) |
申请公布日期 |
1996.09.12 |
申请号 |
CA19962214655 |
申请日期 |
1996.02.23 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
ELLER, BILL ARTHUR;BRYAN, CARL ALFRED JR.;WANG, RICHARD HSU-SHIEN |
分类号 |
C07B61/00;C07C67/343;C07C69/76;C07F9/141;(IPC1-7):C07C69/76 |
主分类号 |
C07B61/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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