| 发明名称 |
METHOD OF 1,1-DICHLORO-4-METHYL-1,3-PENTADIENE PREPARATION |
| 摘要 |
A method of 1,1-dichloro-4-methyl-1,3-pentadiene preparation by dehydrochlorination of 1,1,1,3-tetrachloro-4-methylpentane in an environment of N,N-dimethyl formamide at 130 to 160 degrees C with possible catalysis by lithium chloride. 1,1-Dichloro-4-methyl-1,3-pentadiene is an important intermediate product for production of permethrinic acid and its derived synthetic pyrethroids, which are highly effective insecticides.
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| 申请公布号 |
CS273876(B1) |
申请公布日期 |
1991.04.11 |
| 申请号 |
CS19890000787 |
申请日期 |
1989.02.06 |
| 申请人 |
HAJEK MILAN ING. CSC.,CS;CERMAK JAN ING. DRSC.,CS;SILHAVY PREMYSL ING.,CS;NOVAK MIROSLAV DOC. ING. CSC.,CS;SPIRKOVA BOZENA ING.,CS |
发明人 |
HAJEK MILAN ING. CSC.,CS;CERMAK JAN ING. DRSC.,CS;SILHAVY PREMYSL ING.,CS;NOVAK MIROSLAV DOC. ING. CSC.,CS;SPIRKOVA BOZENA ING.,CS |
| 分类号 |
C07C21/19;(IPC1-7):C07C21/19 |
主分类号 |
C07C21/19 |
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