Plant growth regulator as well as preparation method and application thereof

Abstract

The invention discloses a plant growth regulator as well as a preparation method and an application thereof. The structural formula of the regulator is shown in the formula (I) in the specification. The preparation method comprises the step of subjecting ethephon to react with diethyl aminoethyl hexanoate. The invention also provides a preparation composition. The preparation composition comprises the compound shown in the formula (I), a solvent and auxiliaries, wherein the ratio of parts by weight of the compound shown in the formula (I), to the solvent to the auxiliaries is (1-99):(1-90):(1-20). The regulator has the following beneficial effects that: the compound shown in the formula (I) and the preparation composition can be slowly decomposed into ethephon and diethyl aminoethyl hexanoate after being sprayed on the plants, thus playing roles of slow release and synergy, more effectively preventing plant lodging and increasing the plant yield; and the regulator is salt and is neutral, thus saving the package and transport costs and being safer and more reliable to use.

Description

technical field

[0001] The invention relates to a plant growth regulator and its preparation method and application, in particular to the application of the plant growth regulator in the preparation of preparation compositions. Background technique

[0002] The lodging of grass crops such as corn, barley, sorghum, and rice has brought great losses to agricultural production, and solving this problem is a major problem. The main solution in agriculture is to use growth-inhibiting plant growth regulators such as ethephon to control plant height and prevent lodging. For example, in 2009, Wang Weizhong et al. disclosed that the component for reducing plant height in a gramineous crop yield-increasing anti-lodging preparation is ethephon (Wang Weizhong et al., CN101555175A[P]). However, ethephon and other inhibitory growth regulators have side effects such as affecting the development of ears and tassels, and easily producing small ears, increased bald tip shriveled grains, and ...

Examples

Embodiment 1

[0033] The preparation of compound shown in embodiment 1, formula (I)

[0034] Add 5.4g (0.037mol) ethephon, 16g (0.074mol) diethylaminoethanol hexanoate, 10mL ethyl acetate into a 100mL round bottom flask, heat to 30°C and keep stirring for 12 hours; after the reaction is complete, decompress The solvent was distilled off, and the obtained mixture was subjected to column chromatography (the eluent was a mixed solution of ethyl acetate and petroleum ether with a volume ratio of 1:3), and then the solvent was distilled off under reduced pressure to obtain 19.05 g of a uniform yellow liquid, It is a compound represented by formula (I), and the yield is 89%.

[0035] The nuclear magnetic data of compound shown in formula (I) is as follows:

[0036] δ(300MHz, CDCl 3 ): 0.89(t, 6H, J=6.81Hz), 1.21-1.36(m, 20H), 1.59-1.64(m, 4H), 2.10-2.22(m, 2H), 2.32(t, 4H, J=7.44 Hz), 2.90-2.97(m, 8H), 3.07(t, 4H, J=5.64Hz), 3.76-3.84(m, 2H), 4.37(t, 4H, J=5.64Hz).

Embodiment 2

[0037] The preparation of compound shown in embodiment 2, formula (I)

[0038] In a 100mL round bottom flask, add 5.4g (0.037mol) ethephon, 16g (0.074mol) diethylaminoethanol hexanoate, 20mL ethanol, heat to 50°C and keep stirring for 1 hour; Solvent, the obtained mixture column chromatography (eluent is the mixed solution of ethyl acetate and sherwood oil that volume ratio is 1: 3), then underpressure distillation removes solvent and obtains uniform yellow liquid 18.19g, obtains formula ( The compound shown in I) has a yield of 85%.

[0039] It was confirmed by NMR that there was no substantial difference from the compound prepared in Example 1, indicating that the obtained compound had a correct structure.

Embodiment 3

[0040] Embodiment 3, the preparation of preparation composition

[0041] Compound 10%, acetone 84.3%, sodium lignosulfonate 2%, xanthan gum 0.5%, ethylene glycol 3% and organosilicon SAG 157 20.2% are mixed according to the mass percentage shown in the formula (I) prepared in Example 1 , stirred in a preparation tank for 10 minutes, allowed to stand for 2 hours, and then filtered to obtain the preparation composition.

technical field

[0001] The invention relates to a plant growth regulator and its preparation method and application, in particular to the application of the plant growth regulator in the preparation of preparation compositions. Background technique

[0002] The lodging of grass crops such as corn, barley, sorghum, and rice has brought great losses to agricultural production, and solving this problem is a major problem. The main solution in agriculture is to use growth-inhibiting plant growth regulators such as ethephon to control plant height and prevent lodging. For example, in 2009, Wang Weizhong et al. disclosed that the component for reducing plant height in a gramineous crop yield-increasing anti-lodging preparation is ethephon (Wang Weizhong et al., CN101555175A[P]). However, ethephon and other inhibitory growth regulators have side effects such as affecting the development of ears and tassels, and easily producing small ears, increased bald tip shriveled grains, and ...

Examples

Embodiment 1

[0033] The preparation of compound shown in embodiment 1, formula (I)

[0034] Add 5.4g (0.037mol) ethephon, 16g (0.074mol) diethylaminoethanol hexanoate, 10mL ethyl acetate into a 100mL round bottom flask, heat to 30°C and keep stirring for 12 hours; after the reaction is complete, decompress The solvent was distilled off, and the obtained mixture was subjected to column chromatography (the eluent was a mixed solution of ethyl acetate and petroleum ether with a volume ratio of 1:3), and then the solvent was distilled off under reduced pressure to obtain 19.05 g of a uniform yellow liquid, It is a compound represented by formula (I), and the yield is 89%.

[0035] The nuclear magnetic data of compound shown in formula (I) is as follows:

[0036] δ(300MHz, CDCl 3 ): 0.89(t, 6H, J=6.81Hz), 1.21-1.36(m, 20H), 1.59-1.64(m, 4H), 2.10-2.22(m, 2H), 2.32(t, 4H, J=7.44 Hz), 2.90-2.97(m, 8H), 3.07(t, 4H, J=5.64Hz), 3.76-3.84(m, 2H), 4.37(t, 4H, J=5.64Hz).

Embodiment 2

[0037] The preparation of compound shown in embodiment 2, formula (I)

[0038] In a 100mL round bottom flask, add 5.4g (0.037mol) ethephon, 16g (0.074mol) diethylaminoethanol hexanoate, 20mL ethanol, heat to 50°C and keep stirring for 1 hour; Solvent, the obtained mixture column chromatography (eluent is the mixed solution of ethyl acetate and sherwood oil that volume ratio is 1: 3), then underpressure distillation removes solvent and obtains uniform yellow liquid 18.19g, obtains formula ( The compound shown in I) has a yield of 85%.

[0039] It was confirmed by NMR that there was no substantial difference from the compound prepared in Example 1, indicating that the obtained compound had a correct structure.

Embodiment 3

[0040] Embodiment 3, the preparation of preparation composition

[0041] Compound 10%, acetone 84.3%, sodium lignosulfonate 2%, xanthan gum 0.5%, ethylene glycol 3% and organosilicon SAG 157 20.2% are mixed according to the mass percentage shown in the formula (I) prepared in Example 1 , stirred in a preparation tank for 10 minutes, allowed to stand for 2 hours, and then filtered to obtain the preparation composition.

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