发明名称 |
Process for the preparation of ketones |
摘要 |
An improved method for the decarbalkoxylation of alkylated beta -keto esters to obtain high yields of ketones. In accordance with the method, decarbalkoxylation of alkylated beta -keto esters is accomplished by heating the esters in the presence of dilute aqueous alkali and an effective amount of a phase-transfer agent. The method produces commercially practical yields of ketone in a manner which is facile, economical and environmentally safe. Novel methylene-linked pyrethroid ketones produced from the improved method exhibit insecticidal activity against various agricultural pests.
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申请公布号 |
US5274136(A) |
申请公布日期 |
1993.12.28 |
申请号 |
US19920907342 |
申请日期 |
1992.07.01 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF AGRICULTURE |
发明人 |
MILLS, FRANK D.;BROWN, RICHARD T.;MILLS, JR., GILES D. |
分类号 |
A01N35/02;A01N43/08;C07C45/67;C07C49/577;C07D307/42;(IPC1-7):C07C45/65;C07D307/46 |
主分类号 |
A01N35/02 |
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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