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Tert-amyl alcohol sodium preparing process and molten sodium dispersant

A technology of sodium tert-amyl alcohol and dispersant, applied in the field of preparing tert-amyl alcohol

Inactive Publication Date: 2007-06-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to provide a kind of preparation method of sodium tert-amyl alcohol and the dispersant of molten sodium, so as to overcome the fact that the original penetrating agent is easy to participate in the reaction and produce unnecessary by-products, and in the tert-amyl alcohol generated After the reaction of sodium and benzonitrile derivatives to form pigments, the defects that are not easy to be washed away greatly increase the reaction speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 5 grams of metallic sodium plus 15 grams of sodium chloride were vigorously stirred in 150 milliliters of tert-amyl alcohol and heated to 102 ° C. After about 12 hours, all the sodium was dissolved to form sodium tert-amyl alcohol.

Embodiment 3

[0031] 5 grams of sodium metal plus 0.125 grams of anhydrous aluminum chloride were vigorously stirred in 150 milliliters of tert-amyl alcohol and heated to 102 ° C, and the sodium was completely dissolved in about 5 hours and 30 minutes to form sodium tert-amyl alcohol.

Embodiment 4

[0033] 5 grams of sodium metal plus 15 grams of calcium chloride were vigorously stirred in 150 milliliters of tert-amyl alcohol and heated to 102 ° C, and the sodium was completely dissolved in about 7 hours and 20 minutes to form sodium tert-amyl alcohol.

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PUM

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Abstract

The present invention relates to tert-amyl alcohol sodium preparing process and molten sodium dispersant. During preparing tert-amyl alcohol sodium with sodium and tert-amyl alcohol as material, the metal salt with the general expression of MiAj is used as the dispersant, where, M represents 1-4 valent metal ion, A is acid radical, i is integral of 1-4 and j is integral of 1-3. The molten sodium dispersant of the present invention is calcium chloride, sodium chloride, titanium chloride, aluminum chloride, etc. and has sodium adsorbed onto its surface to increase the reaction surface area of sodium and speed the reaction of sodium and tert-amyl alcohol, with the reaction period being shortened to less than 12 hr.

Description

technical field [0001] The invention belongs to the field of organic chemistry, in particular to a method for preparing sodium tert-amyl alcohol by using metal salt as a dispersant through the reaction of sodium and tert-amyl alcohol. Background technique [0002] Sodium tert-amyloxide is widely used as a medium-strength alkoxide in the preparation of diketopyrrolopyrrole pigments, as described in US Pat. No. 4,579,949. [0003] Sodium tert-amyl alcohol is usually carried out by metal sodium and tert-amyl alcohol at the reflux temperature of tert-amyl alcohol. At this temperature, sodium melts into balls, and due to its high surface tension, it is not easy to disperse in tert-amyl alcohol, so it limits the full contact between alcohol and sodium; The acidity of is much weaker than that of straight-chain alcohols, so that the formation of sodium tert-amyloxide is very slow. This is a liquid-liquid heterogeneous reaction, and mass transfer is a major factor controlling the r...

Claims

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Application Information

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IPC IPC(8): C07C31/30C07C31/125
Inventor 潘大伟董志军何谨馨陶旭晨
Owner DONGHUA UNIV
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