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(5Z,7E)-5,7-Dodecadien-1-Ol Acetate CAS 78350-11-5
  • (5Z,7E)-5,7-Dodecadien-1-Ol Acetate CAS 78350-11-5

(5Z,7E)-5,7-Dodecadien-1-Ol Acetate CAS 78350-11-5

    Payment Type: L/C,T/T,D/P
    Incoterm: FOB,CIF

Basic Info

Model No.: 78350-11-5

Additional Info

Transportation: Ocean,Air

Place of Origin: CHINA

Product Description

Sex Pheromone of masson-pine caterpillar whose main ingredient is (5Z,7E)-5,7-Dodecadien-1-ol acetate CAS number 78350-11-5.
The synthesis process is as below:
1. Under the protection of argon, drop the tetrahydrofuran solution of 2-heptyn-1-ol into lithium tetrahydroaluminum at 0 ° C, and stir the reaction at room temperature. The reaction was quenched at 0 ° C, suction filtered, the solid was washed, the filtrate was extracted, the liquid was separated, and the organic phases were combined. The organic phase was dried, concentrated under reduced pressure, and purified by silica gel column chromatography to obtain (E) -2-hepten-1-ol.
2. Under the protection of argon, add a solution of (E) -2-hepten-1-ol in dichloromethane to 4A molecular sieve and PDC oxidant, and stir the reaction at room temperature. After the reaction was completed, suction filtration was performed, the solid and filtrate were washed separately, and the organic phase was combined. The organic phase was dried and concentrated under reduced pressure to obtain (E) -2-heptenal crude product.
3. Under the protection of argon, add sodium bistrimethyldisilazide at -78 ° C to a solution of (5-ethoxy-5-oxopentyl) triphenylphosphonium bromide in THF and stir reaction. Then, a solution of the crude product of (E) -2-heptenal in THF was added, and the reaction was stirred at room temperature. After the reaction was completed, the reaction was quenched, the liquid was separated, and the organic phases were combined. The organic phase was dried, concentrated under reduced pressure, and purified by silica gel column chromatography to obtain (5Z, 7E) -dodecyl-5,7-dienoate.
4. Under the protection of argon gas, add a solution of (5Z, 7E) -dodecyl-5,7-dienoate (5) in tetrahydrofuran to lithium tetrahydrogen lithium at 0 ° C, and stir the reaction at room temperature. After the reaction was completed, the reaction was quenched, the liquid was separated, and the organic phases were combined. The organic phase was dried, concentrated under reduced pressure, and purified by silica gel column chromatography to obtain (5Z, 7E) -dodeca-5,7-dien-1-ol.
5. Under the protection of argon, drop acetyl chloride into a dichloromethane solution of (5Z, 7E) -dodec-5,7-dien-1-ol and triethylamine at 0 ° C, and stir the reaction at room temperature. After the reaction was completed, the reaction was quenched, the liquid was separated, and the organic phases were combined. The organic phase was dried, concentrated under reduced pressure, and purified by silica gel column chromatography to obtain (5Z, 7E) -5,7-Dodecadien-1-ol acetate CAS number 78350-11-5.


Thera. Category: Insect Sex pheromone

Cas No.: 78350-11-5

Synonym:(5Z,7E)-5,7-Dodecadien-1-ol acetate;Sexual pheromone of Dendrolimus punctatus


78350-11-5


Molecular Formula: C12H22O

Molecular Weight:

Assay: ≥99.%

Packing: Export worthy packing

lMaterial Safety Data Sheet: Available on request


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