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    • 9. 发明授权
    • Silylated 1,4-dihydropyridines
    • 苯基1,4-二羟基吡啶
    • US3781291A
    • 1973-12-25
    • US3781291D
    • 1971-05-26
    • SULZBACH RIQBAL A
    • SULZBACH RIQBAL A
    • C07F7/10C07D29/40
    • C07F7/10
    • SILYLATED NITROGEN CONTAINING HETEROCYCLIC COMPOSITIONS OF THE FORMULA

      R1-SI(-R)2-N
      WHEREIN X AND Y ARE SELECTED FROM THE GROUP CONSISTING OF C-R3 AND N WITH THE PROVISO THAT NO NITROGEN ATOM IS ADJACENT TO ANOTHER NITROGEN ATOM; R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL, HETEROCYCLIC, SILYL AND STANNYL WHEREIN THE MEMBER MAY BE ATTACHED VIA AN OXYGEN ATOM; R1 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL, HETEROCYCLIC, SILYL, STANNYL AND HYDROGEN WHEREIN THE MEMBER MAY OR MAY NOT BE ATTACHED VIA AN OXYGEN ATOM; R2 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL, HETEROCYCLIC, SILYL, STANNYL, HYDROGEN, TERTIALRY AMINO, PHOSPHINO, OXOPHOSPHINO, ACETAL AND KETAL WHEREIN SAID MEMBER MAY OR MAY NOT BE ATTACHED VIA AN OXYGEN ATOM AND WHEREIN R2 AND X TOGETHER MAY BE AN ORTHO CONDENSED CYCLIC OR POLYCYCLIC SYSTEM; AND R3 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL, HETEROCYCLIC, SILYL, STANNYL, HYDROGEN, TERTIARY AMINO, PHOSPHINO, OXOPHOSPHINO, ACETAL AND KETAL WHEREIN SAID MEMBER MAY NOT BE ATTACHED VIA AN OXYGEN ATOM . EXEMPLARY OF SUCH COMPOSITIONS ARE 1,4-BIS-(TRIMETHYLSILYL)-1,4-DIHYDROPYRIDINE, 1,4,4-TRIS-(TRIMETHYLSILYL)-1,4DIHYDROPYRIDINE, 1,4-BIS(TRIMETHYL)-1,4-DIHYDROQUINOLINE, AND 1,4 - BIS - (TRIMETHYLSILYL) - 1,4 - DIHYDROPYRAZINE. THE COMPOSITIONS OF THE INVENTION ARE USEFUL AS CATALYSTS FOR THE ADDITION OF CHLOROSILANES TO ESTERS AND KETONES AND AS REDUCING AGENTS FOR PREPARING HYDROGENATION CATALYSTS FROM NOBLE METAL COMPOUNDS SUCH AS RHODIUM AND PLATINUM.