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Compound and application thereof to preparation of orseolia oryzae wood-mason sex attractant

A compound and esterification technology, which is applied in the preparation of hydroxyl compounds, the preparation of organic compounds, and the attractants of harmful agents, etc., can solve the problems of sharp reduction in the number of natural enemy populations, improvement of drug resistance of rice gall mosquitoes, and excessive pesticide residues. Reduced insect population density, low cost and good accuracy

Inactive Publication Date: 2016-07-27
CHINA AGRI UNIV
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  • Description
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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 application thereof to preparation of orseolia oryzae wood-mason sex attractant
  • Compound and application thereof to preparation of orseolia oryzae wood-mason sex attractant
  • Compound and application thereof to preparation of orseolia oryzae wood-mason sex attractant

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Embodiment 1

[0076] The preparation of compound shown in embodiment 1, formula I

[0077] according to figure 1 The synthetic scheme shown in the preparation was carried out.

[0078] 1) Synthesis of (R)-4-methylphenylmethyl sulfoxide (1)

[0079] 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 -20°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 -20 ℃. 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 application thereof to preparation of orseolia oryzae wood-mason sex attractant. The compound is (2S, 6S)-2, 6-2 acetoxyl group heptanes, and the structural formula of the compound is as shown in the formula I. The compound can be matched with (6S)-6-acetoxyl group-2-heptanone or used independently to serve as the orseolia oryzae wood-mason sex attractant and can be used for conducting population monitoring and comprehensive prevention and control over orseolia oryzae wood-mason. The orseolia oryzae wood-mason sex attractant prepared from the compound and a lure of the sex attractant can be used for population monitoring and predication of orseolia oryzae wood-mason, mass trapping and interference with mating. The sex attractant prepared from sex pheromone (compound) and the lure of the sex attractant can be used for population monitoring and comprehensive prevention and control over orseolia oryzae wood-mason, and the sex attractant is low in cost, high in efficiency and suitable for predicating occurrence regularity 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] Rice gall midge, Orseoiaoryzae (Wood-Mason), Diptera, Orseoiaryzae, 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 larva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/14C07C69/16C07C315/02C07C317/14C07C315/04C07C317/44C07C317/46C07C29/09C07C31/20C07C29/00C07F7/18A01N37/02A01P19/00
CPCC07C67/14A01N37/02C07C29/00C07C29/09C07C31/20C07C69/16C07C315/02C07C315/04C07C317/14C07C317/44C07C317/46C07F7/1804
Inventor 刘亚佳
Owner CHINA AGRI UNIV
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