申请人:Monsanto Company
公开号:US04013661A1
公开(公告)日:1977-03-22
Substituted 1,2-dihydropyridines of the formula ##SPC1## In which R and R.sup.2 are selected from the group consisting of hydrogen, --NH.sub.2, silyl, silyl linked via oxygen, silyl linked via nitrogen, sulfamyl, organosulfonamido, nitro, organic radical, organic radical linked via oxygen, organic radical linked via sulfur, organic radical linked via nitrogen, organic radical linked via --SO-- and organic radical linked via --SO.sub.2 --; with the proviso that the R.sup.2 groupings when joined together form an ortho condensed cyclic or polycyclic hydrocarbon; R.sup.1 is a member selected from the group consisting of hydrogen, --NH.sub.2, silyl, silyl linked via oxygen, silyl linked via nitrogen, sulfamyl, organosulfonamido, nitro, organic radical, organic radical linked via oxygen, organic radical linked via sulfur, organic radical linked via nitrogen, organic radical linked via --SO-- organic radical linked via --SO.sub.2 --, mercapto, sulfino and sulfo; R.sup.3 is a member selected from the group consisting of hydrogen, halogen, and methyl; and Z is a member selected from the group consisting of halogen and an electron-withdrawing group containing an electronegative atom doubly or triply bonded to a more positive atom which atom is singly bonded to the carbon atom attached to the pyridine ring. Exemplary of such compositions is 1,4-bis(trimethylsilyl)-2-(1-cyanoethyl)-1,2-dihydropyridine. The compounds of the invention are useful as antioxidants for polyphenyl ethers, as stabilizers for halogenated polyhydrocarbons, as curing agents for silicones and epoxide resins, as dyeing improvers for polyesters and as fuel additives for imparting hypergolic properties.
将公式中的1,2-二氢吡啶置换为##SPC1##,其中R和R.sup.2选自氢、--NH.sub.2、硅烷基、通过氧原子连接的硅烷基、通过氮原子连接的硅烷基、磺酰胺基、有机磺酰胺基、硝基、有机基、通过氧原子连接的有机基、通过硫原子连接的有机基、通过氮原子连接的有机基、通过--SO--连接的有机基和通过--SO.sub.2--连接的有机基等组成的群;R.sup.1选自氢、--NH.sub.2、硅烷基、通过氧原子连接的硅烷基、通过氮原子连接的硅烷基、磺酰胺基、有机磺酰胺基、硝基、有机基、通过氧原子连接的有机基、通过硫原子连接的有机基、通过氮原子连接的有机基、通过--SO--连接的有机基、通过--SO.sub.2--连接的有机基、巯基、磺基和亚磺基;R.sup.3选自氢、卤素和甲基;Z选自卤素和含有与更正电原子双键或三键连接的带有电子亲和原子的取代基,该原子与连接到吡啶环上的碳原子形成单键。这种化合物的示例是1,4-双(三甲基硅基)-2-(1-氰乙基)-1,2-二氢吡啶。该发明的化合物可用作多酚醚的抗氧化剂,卤代聚烃的稳定剂,硅烷和环氧树脂的固化剂,改善涤纶的染料助剂以及用于赋予超燃特性的燃料添加剂。