| 摘要 |
This invention relates to compounds of the formula: <IMAGE> (I) wherein R1 is an optionally substituted alkyl or alkenyl group; at least one of R2, R5 and R6 is <IMAGE> wherein (1) when R2 is <IMAGE> R5 is a hydrogen atom, an alkyl group or a halogen atom and R6 is a hydrogen atom or an alkyl group, (2) when R5 is <IMAGE> R2 is an alkyl group and R6 is a hydrogen atom or an alkyl group, (3) when R6 is <IMAGE> R2 is an optionally substituted (C1-C6) alkyl or a (C3-C6) alkenyl group and R5 is a hydrogen atom, a (C1-C6) alkyl group or a halogen atom, and (4) when R2 and R6 are both independently <IMAGE> R5 is hydrogen atom or an alkyl group; Y is a hydrogen atom or an alkyl group; X is a hydrogen atom, a halogen atom, a trihalomethyl group and the like; and n is an integer from 1 to 3; or the agronomically acceptable alkali metal or acid addition salts thereof. These compounds are useful as chemical hybridization agents on monocotyledonous crops and are especially effective in wheat, corn, barley, rice, rye, triticale and forage crops.
|
