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合成乙草胺（Acetochlor） |
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| The title compds.
[I; R0 = halo, alkyl, alkenyl, etc.; R1-R3 = H, halo,
alkyl, etc.; R2 also may be (un)substituted Ph, naphthyl,
pyridyl, etc.; n = 0-2], useful as intermediates for the
prepn. of known, herbicidally active 3-hydroxy-4-aryl-5-oxopyrazoline
derivs., were prepd. E.g., a 2-step synthesis of I [R0
= H; R1, R3 = Et; R2 = Me], starting with 2,6-diethyl-4-methylaniline. |
| 了解更多请联络： |
wushiyou@vip.sina.com
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合成杀虫剂（Insecticides） |
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Sixty-five isothioureas I (R1 = alkyl, cycloalkyl; R2
= alkyl, cycloalkyl; R3 = alkyl, cycloalkyl, halo; R4
= optionally substituted alkyl, alkenyl, cycloalkyl; R5
= alkyl, alkenyl, cycloalkyl; n = 0 - 2) and their salts,
useful as insecticides and acaricides (extensive data
tabulated), were prepd. Thus, 2,6-(Me2CH)2C6H3NH2 was
converted with CSCl2 into 2,6-(Me2CH)2C6H3NCS which reacted
with PrNH2 to give 2,6-(Me2CH)2C6H3NHCSNHPr. This was
alkylated with MeI or EtBr to give I (R1 = R2 = Me2CH,
R3 = H, R4 = Pr, R5 = Me, Et). |
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