Production of conjugated polyeneyn
专利汇可以提供Production of conjugated polyeneyn专利检索，专利查询，专利分析的服务。并且PURPOSE: To efficiently obtain the title compound having insecticidal activity without requiring protection of carbonyl group, etc., by reacting stannylsilylethyn with a readily available halide and halogen compound in the presence of a fluoride ion source and catalyst of metal of the group VIII in mild conditions.
CONSTITUTION: A stannylsilylethyn expressed by formula I is reacted with a halide expressed by formula II and halogen compound expressed by formula III in using a catalyst of the group VIII metal the presence of a fluoride ion, preferably using at a molar ratio of the compound expressed by formula I: compound expressed by formula II: compound expressed by formula III of 1:1:1 in a nonprotonic polar solvent such as dimethylformamide at -100°C-100°C, preferably -80°C-80°C to provide the compound expressed by formula IV (R
1 , R
2 and R
3 are alkyl, aryl, etc.; R
4 , R
5 and R
6 are alkyl, aryl, alkenyl, etc.; R
7 -R
12 are alkyl, aryl, alkenyl, etc.; X
1 and X
2 are Cl, Br, etc.).
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