发明名称 |
Method for preparing a salt of 4-hydroxystyrene and for preparing 4-tertiary-butoxycarbonyloxystyrene therefrom |
摘要 |
4-Acetoxystyrene is reacted with a base in a solvent to form a salt of 4-hydroxystyrene via saponification. Alternatively, 4-hydroxystyrene is reacted with a base to form a salt of 4-hydroxystyrene. In the latter case, the 4-hydroxystyrene is prepared by the transesterification of 4-acetoxystyrene. Subsequently or simultaneously, the salt of 4-hydroxystyrene is reacted, preferably in situ. with di-tertiary-butyl-dicarbonate to form 4-tertiary-butoxycarbonyloxystyrene.
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申请公布号 |
US5256809(A) |
申请公布日期 |
1993.10.26 |
申请号 |
US19920940424 |
申请日期 |
1992.09.03 |
申请人 |
HOECHST CELANESE CORPORATION |
发明人 |
KVAKOYSZKY, GEORGE;REA, JAMES H.;SHEEHAN, MICHAEL T.;SMITH, BRAD L. |
分类号 |
C07C37/64;C07C39/235;C07C68/06;(IPC1-7):C07C69/96;C07C37/00 |
主分类号 |
C07C37/64 |
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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