Trans-, cis-or cis-trans-1, 3-dichloropropene compound and rectification method thereof

Abstract

The invention belongs to the technical field of chemical industry, and discloses a trans-1, 3-dichloropropene compound, a cis-1, 3-dichloropropene compound, a cis-trans-1, 3-dichloropropene compound and a rectification method thereof, the dichloropropene compound is composed of the trans-1, 3-dichloropropene and the cis-1, 3-dichloropropene or the cis-trans-1, 3-dichloropropene; the trans-1, 3-dichloropropene is mainly used for preparing chloramine, and the chloramine is used for preparing final product clethodim. The cis-trans mixed 1, 3-dichloropropene is used as a soil fumigant and a soil insecticide, radically treats underground nematodes and replaces methyl bromide in a methyl bromide project of the United Nations. The cis 1, 3-dichloropropene and a cis-trans mixed 1, 3-dichloropropene product are blended to serve as the cis-trans mixed 1, 3-dichloropropene to be still used for radically treating the underground nematodes. The dichloropropene compound can inhibit or directly killvarious nematodes and relieve nematode disease damage, the control effect reaches 98% or above, and the lasting period is 3 months or above.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a trans-1,3-dichloropropene compound, a cis-1,3-dichloropropene compound, a cis-trans 1,3-dichloropropene compound and its rectification method. Background technique [0002] At present, the closest prior art: plant parasitic nematodes have several types that can cause huge economic losses, and the most common genera have: leaf bud nematodes (Aphelenchoides), root-knot nematodes (Meloidogyne), cyst nematodes ( Heterodera), Globodera, Nacobbus, Pratylenchus, Ditylenchus, Xiphinema, Longidorus, Trichodorus, etc. Some plant-parasitic nematodes damage the tissue of plant roots and may form visible galls (root-knot nematodes), which are very useful indicators for their diagnosis. Some nematodes infect plant viruses as they feed on plants. One example is the dagger nematode (Xiphinema index), Grapevine Fanleaf Virus (GFLV), a very important carrier of grapevine diseases. ...

AI Technical Summary

Problems solved by technology

[0003] The losses caused by underground nematodes to crops are more accurate and predictable than other pests and diseases. Nematodes can cause vegetables, peanuts, soybeans, tobacco, sugar cane, citrus, sweet potatoes, wheat, rice and other crops to be harmed to varying degrees. big loss

[0004] At present, most of the pesticides used to control underground nematodes are very toxic. Ozone will produce bromine during use and destroy the ozone layer in the atmosphere. Methyl bromide has been clearly banned in the United Nations Hormon Convention; the use of Ozone as soil fumigation will be completely banned in 2020 pesticides, soil pesticides, large amount of control, high input costs, difficult control operation, has become an urgent problem to be solved in today's agricultural development

At the same time, the existing technology cannot suppress or directly kill various nematodes, reduce the harm of nematodes, reduce the control effect, and shorten the duration; the existing technology cannot avoid inhibiting soil-borne diseases, overcome continuous cropping obstacles, and increase bacterial diseases and fungal diseases Infection and pesticide usage; The fertilizer utilization rate of the prior art is low, and can not effectively promote the robust growth of plants; The prior art cannot improve the micro-ecological environment of crop roots, activate the soil, fix nitrogen, decompose phosphorus, and decompose potassium, which reduces the utilization rate of fertilizers and does not Promotes plant root growth

[0005] In summary, the problems in the prior art are: (1) most of the pesticides used to prevent and control underground nematodes are very toxic, and oxymethane produces bromine in the use process to destroy the ozone layer in the atmosphere

[0006] (2) Using stinky methane as soil fumigant and soil insecticide requires a large amount of control, high input costs, and difficult control operations.

[0007] (3) The existing technology cannot inhibit or directly kill various nematodes, reduce the harm of nematode diseases, reduce the control effect, and shorten the duration of effect

[0008] (4) Existing technologies cannot avoid suppressing soil-borne diseases, overcome continuous cropping obstacles, and increase the infection of bacterial diseases and fungal diseases and the use of pesticides

[0009] (5) The fertilizer utilization rate of the prior art is low and cannot effectively promote the robust growth of plants

[0010] (6) The prior art cannot improve the micro-ecological environment of crop roots, activate the soil, fix nitrogen, decompose phosphorus, and decompose potassium, which reduces the utilization rate of fertilizers and is not conducive to promoting the growth of plant roots

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