Pollen suppressants of the formula
wherein X represents a group of the formula OR¹ or NR¹R² wherein R¹ represents a C₁-C₄ alkyl (optionally substituted with a C₁-C₄ alkoxy group, 1 to 3 halogen atoms, or a carboxy or C₁-C₄ alkylcarbonyl group), alkenyl (optionally substituted with 1 to 3 halogen atoms), or alkynyl group and R² represents H or CH₃, with the proviso that when R¹ is CH₃, R² is CH₃; Y is hydrogen, C₁-C₂₂ linear alkyl or alkenyl containing up to four C=C double bonds, C₃-C₆ branched alkyl or alkenyl, C₂-C₄ alkoxyalkyl, cyclohexylmethyl, halogenated C₁-C₄ alkyl, phenyl, benzyl, -(CH₂CH₂O)mCH₂CH₃ in which m is an integer from 1 to 5, or -CH(CH₂OR⁴)CH₂OR⁵ or -CH₂CHOR⁴CH₂OR⁵ in which either R⁴ or R⁵ but not both represent a C₁-C₂₂ linear alkyl- or alkenylcarbonyl group containing up to four C-C double bonds; and R represents C₁-C₄ alkyl, phenyl, naphthyl, or phenyl or naphthyl substituted with one to three substituents selected from the group consisting of halogen, trihalomethyl, C₁-C₄ alkoxy, C₁-C₄ alkyl, and cyano; and salts thereof are disclosed along with methods of producing these compounds and of using them to produce hybrid seed in self-fertilizing plants.
式中的花粉
抑制剂
其中 X 代表式 OR¹ 或 NR¹R² 的基团,其中 R¹ 代表 C₁-C₄ 烷基(任选被 C₁-C₄ 烷
氧基、1 至 3 个卤原子取代、或羧基或 C₁-C₄烷基羰基)、
烯基(任选被 1 至 3 个卤素原子取代)或炔基,且 R² 代表 H 或 CH₃,但当 R¹ 为 CH₃ 时,R² 为 CH₃;Y 是
氢、含有最多四个 C=C 双键的 C₁-C₂ 直链烷基或
烯基、C₃-C₆ 支链烷基或
烯基、C₂-C₄ 烷
氧基烷基、
环己基
甲基、卤代 C₁-C₄ 烷基、
苯基、
苄基、-(CH₂CH₂O)mCH₂CH₃,其中 m 为 1 至 5 的整数、或 -CH(CH₂OR⁴)CH₂OR⁵ 或 -CH₂CHOR⁴CH₂OR⁵ 其中 R⁴ 或 R⁵ 代表 C₁-C₂₂ 直链烷基或
烯基羰基,含有最多四个 C-C 双键;和 R 代表 C₁-C₄烷基、
苯基、
萘基或被选自卤素、三卤
甲基、C₁-C₄烷
氧基、C₁-C₄烷基和
氰基组成的组中的一至三个取代基取代的
苯基或
萘基;本发明公开了这些化合物及其盐类,以及生产这些化合物和用它们生产自育植物杂交种子的方法。