| 发明名称 |
PROCESS FOR THE PREPARATION OF VITAMIN A, INTERMEDIATES, AND PROCESS FOR THE PREPARATION OF THE INTERMEDIATES |
| 摘要 |
<p>There are provided a dihalogen derivative represented by formula (2): <CHEM> wherein X represents a halogen atom and R<2> represents a protective group for a hydroxyl group; a process for producing the same; and a process for producing vitamin A by use of said dihalogen derivative.</p> |
| 申请公布号 |
EP1085008(A1) |
申请公布日期 |
2001.03.21 |
| 申请号 |
EP20000913075 |
申请日期 |
2000.04.03 |
| 申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
TAKAHASHI, TOSHIYA;FURUTANI, ATSUSHI;SEKO, SHINZO |
| 分类号 |
C07C67/00;C07C67/287;C07C69/63;C07C403/06;C07C403/22;(IPC1-7):C07C69/63 |
主分类号 |
C07C67/00 |
| 代理机构 |
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