JPS55104250A - Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it - Google Patents
Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising itInfo
- Publication number
- JPS55104250A JPS55104250A JP1250179A JP1250179A JPS55104250A JP S55104250 A JPS55104250 A JP S55104250A JP 1250179 A JP1250179 A JP 1250179A JP 1250179 A JP1250179 A JP 1250179A JP S55104250 A JPS55104250 A JP S55104250A
- Authority
- JP
- Japan
- Prior art keywords
- ester
- butylphenyl
- cyano
- tert
- phenoxybenzyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain the title optically active compound having an activity 4 times that of the racemic modification, by adding a seed crystal to an α-cyano-3-phenoxybenzyl ester solution.
CONSTITUTION: S-(+)-2-(4-tert-Butylphenyl)isovaleric acid is esterified by the well-known method to form a solution of an ester (in a lower alcohol) having the acid side of the (S) form. Crystals of the ester of the formula (× is asymmetric carbon atom), wherein the acid and alcohol sides are (S)-forms, are formed from the solution in the presence or absence of a basic catalyst, e.g. a nitrogen or metallic base, and separated from the mother liquor. Alternatively, an ester wherein the acid side is the (S)-form is recovered by concentration to give the title compound comprising 60% or more of ester having the both sides of (S)-forms, and a high activity.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1250179A JPS55104250A (en) | 1979-02-05 | 1979-02-05 | Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1250179A JPS55104250A (en) | 1979-02-05 | 1979-02-05 | Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55104250A true JPS55104250A (en) | 1980-08-09 |
Family
ID=11807106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1250179A Pending JPS55104250A (en) | 1979-02-05 | 1979-02-05 | Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55104250A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5770852A (en) * | 1980-10-20 | 1982-05-01 | Sumitomo Chem Co Ltd | Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926425A (en) * | 1972-07-11 | 1974-03-08 | ||
JPS5025544A (en) * | 1973-07-05 | 1975-03-18 |
-
1979
- 1979-02-05 JP JP1250179A patent/JPS55104250A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926425A (en) * | 1972-07-11 | 1974-03-08 | ||
JPS5025544A (en) * | 1973-07-05 | 1975-03-18 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5770852A (en) * | 1980-10-20 | 1982-05-01 | Sumitomo Chem Co Ltd | Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate |
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