[EN] PYRIMIDINE COMPOUNDS AND THEIR USE AS PESTICIDES<br/>[FR] COMPOSES DE PYRIMIDINE ET UTILISATION DE CEUX-CI COMME PESTICIDES
申请人:SUMITOMO CHEMICAL CO
公开号:WO2003076415A1
公开(公告)日:2003-09-18
The present invention relates to a pyrimidine compound of formula (1): wherein R1 is C3-C7 alkynyl; R2 is hydrogen, halogen, or C¿1?-C3 alkyl; and R?3 is C¿1-C8 alkyl that may be substituted with halogen or C1-C3 alkoxy, or C3-C6 cycloalkyl (that may be substituted with halogen or C1-C3 alkyl) C1-C3 alkyl; a pesticidal composition comprising the pyrimidine compound as an active ingredient; and a method for controlling pests comprising applying the pyrimidine compound to pests or habitats of pests.
The enantioselective aminocatalytic α-chlorination of aldehydes is a challenging reaction because of its tendency to proceed through neutral intermediates in unselective pathways. Herein we report the rational shift to a highly selective reaction pathway involving charged intermediates using hexafluoroisopropanol as solvent. This change in mechanism has enabled us to match and improve upon the yields
Vinyl chloroformates are described of formula ##STR1## in which: R.sub.1 .dbd.R.sub.2 .dbd.Cl, Br or a saturated 1-4 carbon atom alkyl or together they form a cycloaliphatic ring of 4-8 carbon atoms; R.sub.3 .dbd.H when R.sup.1 or R.sup.2 .dbd.alkyl; saturated alkyl of 1-4 carbon atoms or aryl; ##STR2## in which R.sub.4 .dbd.R.sub.5 .dbd.alkyl of 1-4 carbon atoms or R.sub.3 forms with R.sub.2 a C.sub.5 -C.sub.8 ring which may have attached oxygen atoms. The process of preparation consists of reacting phosgene with the corresponding compounds containing alpha halogen and a carbonyl group. The products are very useful to obtain vinyl carbonates and carbamates.
The present invention relates to a pyrimidine compound of formula (1):
wherein R
1
is C
3
-C
7
alkynyl; R
2
is hydrogen, halogen, or C
1
-C
3
alkyl; and R
3
is C
1
-C
8
alkyl that may be substituted with halogen or C
1
-C
3
alkoxy, or C
3
-C
6
cycloalkyl (that may be substituted with halogen or C
1
-C
3
alkyl) C
1
-C
3
alkyl; a pesticidal composition comprising the pyrimidine compound as an active ingredient; and a method for controlling pests comprising applying the pyrimidine compound to pests or habitats of pests.