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Compound and its application in preparing rice gall mosquito sex attractant

A compound and oxidation reaction technology, which is applied in the preparation of hydroxyl compounds, the preparation of organic compounds, and insect attractants, etc., can solve the problems of sharp reduction in the number of natural enemy populations, improvement of rice gall mosquito resistance, and excessive pesticide residues. Density reduction, low cost, good accuracy

Active Publication Date: 2018-12-14
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the larvae are hidden inside the standard onion, it is difficult to directly contact and kill them. Systemic pesticides are mainly used for chemical control in production, which can easily cause pesticide residues to exceed the standard and affect product quality. With the continuous improvement of medicinal properties, the sharp decline in the population of natural enemies, and environmental pollution and other problems

Method used

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  • Compound and its application in preparing rice gall mosquito sex attractant
  • Compound and its application in preparing rice gall mosquito sex attractant
  • Compound and its application in preparing rice gall mosquito sex attractant

Examples

Experimental program
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Effect test

Embodiment 1

[0081] The preparation of compound shown in embodiment 1, formula I

[0082] according to figure 1 The synthetic scheme shown in the preparation was carried out.

[0083] 1) Synthesis of (R)-4-methylphenylmethyl sulfoxide (1)

[0084] Under the protection of nitrogen, 200mL of anhydrous dichloromethane, 24.8g of (R.R)-diethyl tartrate, and 16.8g of tetraisopropyl titanium oxide were added to a 500mL Shrek bottle, and then 1.08mL was slowly added dropwise after stirring for 10 minutes. water, the system was stirred at 25°C for 30min, then cooled to -30°C, 8.3g of 4-methylphenyl methyl sulfide and 18.3g of cumene hydroperoxide were slowly added, and the stirring was continued overnight, during which the temperature was kept at -30 ℃. After the reaction, add ferrous sulfate solution and citric acid solution to quench the reaction, extract with ether (200mL×3) and combine the organic phases, anhydrous MgSO 4 The obtained crude product was dried, precipitated under reduced pres...

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Abstract

The invention discloses a compound and an application of the compound in preparation of an orseolia oryzae sex attractant. The compound is (6S)-6-acetoxyl-2-heptanone, and a structural formula of the compound is represented as a formula I. The compound can cooperate with (6S)-6-acetoxyl-2-heptanone to be taken as the orseolia oryzae sex attractant or can be independently taken as the orseolia oryzae sex attractant, and the compound can be used for performing population monitoring and comprehensive control of orseolia oryzae. The orseolia oryzae sex attractant prepared from the compound and a lure of the orseolia oryzae sex attractant can be applied to: (1) orseolia oryzae population monitoring and prediction; (2), mass trapping; (3), mating disruption. The sex attractant prepared from the sex pheromone (namely, the compound) and the lure of the sex attractant can be used for performing population monitoring and comprehensive control on the orseolia oryzae, and the sex attractant has the advantages of low cost and high efficiency and is suitable for predicting the occurrence rule of pests hiding in insect galls.

Description

technical field [0001] The present invention relates to a compound and its application in the preparation of rice gall midge sex attractant. Background technique [0002] Orseoia oryzae (Wood-Mason), Diptera, Oryzae, is now distributed in Guangdong, Guangxi, Fujian, Yunnan, Guizhou, Hainan, Jiangxi, Hunan, Taiwan, Vietnam, Myanmar and other Southeast Asian countries. It is a common pest on rice, with multiple generations a year and overlapping generations. Mainly through the larvae sucking the juice of the rice growth point, the base of the damaged rice seedlings swells, and then the heart leaves stop growing and elongate from the leaf sheath to form a light green hollow onion tube, and the onion tube extends outward to form a standard onion. Paddy rice all can suffer from seedling to young panicle formation stage, suffer heavy one and can't heading, almost all form scabies or twist and can't be firm so that paddy rice can't heading. Because the larvae are hidden inside th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/14C07C67/08A01N37/02A01P19/00
CPCA01N37/02C07B2200/07C07C29/00C07C45/29C07C67/08C07C69/14C07C315/02C07C315/04C07F7/1804C07F7/188C07F7/1892C07C49/17C07C31/20C07C317/46C07C317/44C07C317/14A01N2300/00
Inventor 刘亚佳曾爱军宋坚利
Owner CHINA AGRI UNIV
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