发明名称 |
NOVEL TRIHALOETHYL CARBONATE DERIVATIVES AND A PROCESS FOR THEIR PRODUCTION |
摘要 |
<p>Process for the preparation of novel trihalomethyl carbonates of the general formula:
<CHEM>
wherein R<1> represents an optionally-substituted cyclopropyl or an optionally-substituted alkyl group, R<1> a methyl group or a hydrogen atom or R<1> and R<2>, together with the carbon atom to which they are attached jointly form a cycloalkyl group, each Hal is a chlorine or bromine atom and M represents an alkali metal atom, wherein a carbonyl compound of the general formula:
<CHEM>
wherein R<1> and R<2> have the same meaning as in formula I, is reacted under substantially anhydrous conditions with a trihaloacetate of the general formula:
Hal3C - @ - O - M (III)
wherein Hal and M have the above-mentioned meaning, in the presence of a highly polar, aprotic inert solvent. The trihalomethyl carbonates are useful as intermediates in the manufacture of pyrethroid insecticides.</p> |
申请公布号 |
EP0016504(B1) |
申请公布日期 |
1983.01.12 |
申请号 |
EP19800200240 |
申请日期 |
1980.03.14 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
KRAMER, PETRUS ANTHONIUS;VERBRUGGE, PIETER ADRIAAN |
分类号 |
C07C69/96;C07C29/09;C07C68/00;(IPC1-7):07C69/96;07C68/00 |
主分类号 |
C07C69/96 |
代理机构 |
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代理人 |
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地址 |
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