申请人:Imperial Chemical Industries, PLC
公开号:US04975112A1
公开(公告)日:1990-12-04
Pyrazine derivatives useful as plant growth regulating agents have the general formula: ##STR1## and stereoisomers thereof, wherein R.sup.1 is C.sub.1 -C.sub.4 alkyl optionally substituted with halogen, or cyclopropyl optionally substituted with C.sub.1 -C.sub.4 alkyl; R.sup.2 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, or C.sub.2 -C.sub.8 alkynyl each optionally substituted with halogen; C.sub.3 -C.sub.6 cycloalkyl, C.sub.3 -C.sub.6 cycloalkenyl, C.sub.3 -C.sub.6 cycloalkylalkyl, C.sub.3 -C.sub.6 cycloalkenylalkyl, phenylalkenyl or phenylalkynyl each optionally substituted on the ring group; R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, halogen, alkylamino, cyano, or alkoxy; n is 0 or 1; and salts, ethers, acylates and metal complexes thereof.
具有植物生长调节作用的吡嗪衍生物具有以下一般公式:##STR1##及其立体异构体,其中R.sup.1是C.sub.1 -C.sub.4烷基,可选择地取代卤素,或环丙基,可选择地取代C.sub.1 -C.sub.4烷基;R.sup.2是C.sub.1 -C.sub.8烷基,C.sub.2 -C.sub.8烯基或C.sub.2 -C.sub.8炔基,每种可选择地取代卤素;C.sub.3 -C.sub.6环烷基,C.sub.3 -C.sub.6环烯基,C.sub.3 -C.sub.6环烷基烷基,C.sub.3 -C.sub.6环烯基烷基,苯基烯基或苯基炔基,每种可选择地取代环基;R.sup.3是氢或C.sub.1 -C.sub.4烷基;R.sup.4是氢,C.sub.1 -C.sub.4烷基,卤素,烷基氨基,氰基或烷氧基;n为0或1;及其盐、醚、酰化物和金属配合物。