Method for preparing 3-chlorine-2-methyl-1-propylene
A technology of methyl propylene and methyl, which is applied in the field of preparing 3-chloro-2-methyl-1-propene, and achieves the effects of less side reactions, high yield and large product yield
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[0044] Embodiment 1: as figure 1 As shown, the present invention ensures enough time to complete the main reaction by adjusting the size of the reaction space, so that the light boiling chlorination side reaction is reduced to the minimum, and the reaction time is short enough (≤0.01s); the heat of reaction is required to be taken away quickly, reducing HCl The contact time with 2-methylpropene, the reaction product and chlorine gas can avoid the occurrence of side reactions of polychlorinated high boilers.
[0045] Such as figure 1 , a chlorination reaction device for preparing 3-chloro-2-methyl-1-propene from chlorine and 2-methylpropene, which includes a reactor A and a reaction system B. The chlorine gas feeding pipe 1 enters the outer pipe 3 through the porous side 2 of the pipe wall, and the outer pipe 3 has a conical nozzle 4 at the end, and the shape of the conical nozzle 4 is cylindrical; the 2-methacrylic feeding pipe 5 passes through the 2-methacrylic pipe 6 The...
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