| 摘要 |
<p>The present invention discloses a process for the preparation of phenyl (1,3,5-triazin-2-yl)carbamates of the formula (I) <CHEM> wherein R<1> is hydrogen atom, C1-C4 alkyl or C1-C4 alkoxy R<2> and R<3> are independently hydrogen atom, halogen atom, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkylthio, C1-C4 haloalkyl, C1-C4 haloalkoxy, C1-C4 haloalkylthio, C2-C4 alkoxyalkyl or NR<7>R<8> R<7> and R<8> are independently hydrogen atom or C1-C4 alkyl R<4>, R<5> and R<6> are independently hydrogen atom, halogen atom, C1-C4 alkyl or C1-C4 alkoxy which comprises: reacting 2-amino-1,3,5-triazines of the formula (II) <CHEM> with diphenyl carbonates of the formula (III) <CHEM> in the presence of alkali metal hydrides in aprotic polar solvents.</p> |
