Metal rhodium compound as well as preparation method and application thereof
A rhodium compound and metal technology, applied in the field of metal rhodium compounds and their preparation, achieves the effects of good insecticidal effect, cost reduction and low cost
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[0031] A method for preparing a metal rhodium compound, which comprises the following steps:
[0032] Step 1. Dissolve 2,4-pentanedione, 3-methoxy-4-hydroxybenzaldehyde, and boron trioxide in a DMF solution with a concentration of 90-100%, preferably a pure DMF solution, 70- under nitrogen protection. After reacting at 90°C for 5-7 hours, of which 80°C and 6 hours are preferred, it is then mixed with hydrochloric acid and allowed to stand and precipitate to obtain (1E, 3Z, 6E)-1,7-bis(3-methoxy-4-hydroxybenzene) Group)-3-hydroxy-1,3,6-heptatrien-5-one, the structural formula is as follows:
[0033]
[0034] Step 2. Combine p-ethylbenzaldehyde with (1E, 3Z, 6E)-1,7-bis(3-methoxy-4-hydroxyphenyl)-3-hydroxy-1,3,6-heptatriene -5-one is dissolved in toluene with a concentration of 90-100%, preferably pure toluene, and then mixed with acetic acid with a concentration of 90-100%, of which pure acetic acid is preferred, and the reaction is performed at 100-150°C for 5-10 hours, of which 1...
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[0042] Example 1
[0043] 1. Product preparation
[0044] Weigh out 0.095g of 2,4-pentanedione, 0.12g of 3-methoxy-4-hydroxybenzaldehyde, and 1mmol of diboron trioxide in 10ml of DMF solution. After reacting at 80℃ for 6 hours under nitrogen protection, add 8ml 0.5M hydrochloric acid, standing to precipitate to obtain (1E,3Z,6E)-1,7-bis(3-methoxy-4-hydroxyphenyl)-3-hydroxy-1,3,6-heptatriene-5 -Ketone; 20 mg of p-ethylbenzaldehyde and 40 mg of (1E, 3Z, 6E)-1,7-bis(3-methoxy-4-hydroxyphenyl)-3-hydroxy-1,3,6 -Heptatrien-5-one was dissolved in 10ml of toluene, 0.5mg of acetic acid was added, and the reaction was carried out at 150°C for 8 hours. After standing still, (1E, 6E)-1,7-bis(3-methoxy-4-hydroxyphenyl) -4-(p-ethylphenylvinyl)-1,6-heptadiene-2,5-dione; 30mg of (1E,6E)-1,7-bis(3-methoxy-4 -Hydroxyphenyl)-4-(p-ethylphenylvinyl)-1,6-heptadiene-2,5-dione and 40mg dichloro(pentamethylcyclopentadienyl) rhodium(III) ) The dimer was dissolved in 8ml of dichloromethane, heated and st...
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