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US09049863B2 Substituted (3R,4R)-4-cyan-3,4-diphenylbutanoates, method for the production thereof and use thereof as herbicides and plant growth regulators 有权
取代的（3R，4R）-4-氰基-3,4-二苯基丁酸酯，其制备方法和用作除草剂和植物生长调节剂

Substituted (3R,4R)-4-cyan-3,4-diphenylbutanoates, method for the production thereof and use thereof as herbicides and plant growth regulators
Abstract:
Compounds of the formula (I) or salts thereof, in each case in the optically active (3R,4R)-threo form, in which R1 is hydrogen or a hydrolysable radical, and (R2)n, (R3)m, n and m are as defined in formula (I) according to claim 1, where the stereochemical configuration at the carbon atom in position 3 of the butanoic acid derivative has a stereochemical purity of from 60 to 100% (R), preferably 70 to 100% (R), or more preferably 80 to 100% (R), in particular 90 to 100% (R), based on a mixture of threo enantiomers present, and the stereochemical configuration at the carbon atom in position 4 of the butanoic acid derivative has a stereochemical purity of from 60 to 100% (R), preferably 70 to 100% (R), more preferably 80 to 100% (R), in particular 90 to 100% (R), based on a mixture of threo enantiomers present, are suitable for use as herbicides and growth regulators, in particular for the selective use in plant crops, and can be prepared by the process of claim 9.
Abstract(Chinese):

式（I）化合物或其盐在各种情况下以旋光（3R，4R） - 苏式形式，其中R 1为氢或可水解基，和（R 2）n，（R 3）m，n和 m如权利要求1所述的式（I）所定义，其中丁酸衍生物的3位的碳原子上的立体化学构型的立体化学纯度为60〜100％（R），优选为70〜100％ R），或更优选80-100％（R），特别是90-100％（R），基于存在的苏式对映异构体的混合物，丁酸衍生物的位置4的碳原子上的立体化学构型具有 基于存在的苏糖对映异构体的混合物，立体化学纯度为60至100％（R），优选70至100％（R），更优选80至100％（R），特别是90至100％（R） 适合用作除草剂和生长调节剂，特别是用于植物作物中的选择性用途，并且可以通过权利要求9的方法制备。

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