This invention provides novel insecticidally and acaricidally active pyrimidine derivatives of formula (I):
and stereoisomers thereof, wherein
R' is selected from alkyl; alkenyl; alkynyl: haloalkyl; haloalkenyl; and cycloalkyl optionally substituted by alkyl or halogen;R2 is selected from alkyl; haloalkyl; alkoxy; alkylamino; dialkylamino; halogen; cycloalkyl optionally substituted by halogen or alkyl; and phenyl optionally substituted by alkyl, haloalkyl, halogen or alkoxy;R3 is selected from hydrogen and halogen;R4 is the residue of an alcohol of formula R4-OH which forms an insecticidal ester when combined with chrysanthemic acid, permethrin acid or cyhalothrin acid; andX is selected from oxygen and sulphur; provided that R2 may not represent an alpha-branched alkyl group or a cycloalkyl group when R' represents 1-methylethyl.
Insecticidally and acaricidally active pyrimidine esters and
申请人:Imperial Chemical Industries PLC
公开号:US04962109A1
公开(公告)日:1990-10-09
This invention provides novel insecticidally and acaricidally active pyrimidine derivatives of formula (I): ##STR1## and stereoisomers thereof, wherein R.sup.1 is selected from alkyl; alkenyl; alkynyl; haloalkyl; haloalkenyl; and cycloalkyl optionally substituted by alkyl or halogen; R.sup.2 is selected from alkyl; haloalkyl; alkoxy; alkylamino; dialkylamino; halogen; cycloalkyl optionally substituted by halogen or alkyl; and phenyl optionally substituted by alkyl, haloalkyl, halogen or alkoxy; R.sup.3 is selected from hydrogen and halogen; R.sup.4 is the residue of an alcohol of formula R.sup.4 --OH which forms an insecticidal ester when combined with chrysanthemic acid, permethrin acid or cyhalothrin acid; and X is selected from oxygen and sulphur.
Small-Ring Compounds. XXXIV. Carbonium Ion Reactions of 1-Methylcyclobutyl, (1-Methylcyclopropyl)-carbinyl and (β-Methylallyl)-carbinyl Derivatives<sup>1</sup>
作者:Eugene F. Cox、Marjorie C. Caserio、Marc S. Silver、John D. Roberts
DOI:10.1021/ja01473a028
日期:1961.6
alcohol as the only cyclic product. About 3% of the ^(14)C content of 1-methylcyclobutanol from the deamination of (1-methylcyclopropyl)-carbynil-α-^(14)C)-amine was found at the 3-position. These results are interpretable in terms of classical carboniumions and/or substituted “bicyclobutonium” ion intermediates with fairly localized positive charges.
[EN] DERIVATIVES OF 4- (IMIDAZOL-5-YL)-2-(4-SULFOANILINO) PYRIMIDINE WITH CDK INHIBITORY ACTIVITY<br/>[FR] DERIVES DE 4- (IMIDAZOL-5-YL)-2-(4-SULFOANILINO) PYRIMIDINE A ACTIVITE INHIBITRICE CDK
申请人:ASTRAZENECA AB
公开号:WO2003076436A1
公开(公告)日:2003-09-18
Compounds of the formula (I): wherein R1, R2, R3, R4, R5 and p are as defined within and a pharmaceutically acceptable salts and in vivo hydrolysable esters are described. Also described are processes for their preparation and their use as medicaments, particularly medicaments for producing a cell cycle inhibitory (anti-cell-proliferation) effect in a warm-blooded animal, such as man.
Process for the preparation of alkyl 1-methylcyclopropanecarboxylate
申请人:——
公开号:US20020016493A1
公开(公告)日:2002-02-07
Disclosed is a 4-step process for the preparation of alkyl esters of 1-methylcyclopropanecarboxylic acid which comprises the steps of (1) converting &ggr;-butyrolactone to &agr;-methyl-&ggr;-butyrolactone; (2) converting the &agr;-methyl-&ggr;-butyrolactone from step (1) to an alkyl 4-halo-2-methylbutyrate; (3) producing a xylene solution of the alkyl 4-halo-2-methylbutyrate; and (4) contacting the xylene solution of an alkyl 4-halo-2-methylbutyrate from step (3) with an alkali metal alkoxide under conditions of temperature and pressure which causes vaporization of (i) an alkanol as it is formed and (ii) an alkyl 1-methylcyclopropanecarboxylate as it is formed from the alkyl 4-halo-2-methylbutyrate. Also disclosed are processes whereby the alkyl 1-methylcyclopropanecarboxylate, prepared as described above, is converted to 1-methylcyclopropylamine.