cas 512-42-5, Sodium methyl sulfate | Articles data ｜lookchem

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512-42-5

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Preparation method of 4-methylanisole
The invention discloses a preparation method of 4-methylanisole. The method includes: using p-cresol and sodium hydroxide as the raw materials to prepare p-methylphenol sodium; allowing the p-methylphenol sodium and dimethyl sulfate to have methylation in a nonpolar solvent to prepare the 4-methylanisole and byproduct sodium methylsulfate; allowing the p-methylphenol sodium and the byproduct sodium methylsulfate to have reaction in a polar solvent to prepare the 4-methylanisole and sodium sulfate. The method has the advantages that the 4-methylanisole is prepared through the three-step reaction, the utilization rate of the dimethyl sulfate is increased, and wastewater zero discharge is achieved.
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Paragraph 0041-0043; 0044-0047; 0052-0058

(2019/08/20)

METHOD FOR PRODUCING MONOALKYL SULFATE
PROBLEM TO BE SOLVED: To provide a method for producing high purity monoalkyl sulfate by reacting dialkyl sulfate and alkali metal salt in an organic solvent. SOLUTION: There is provided the method for producing monoalkyl sulfate by reacting dialkyl sulfate represented by the formula (I) and an alkali metal salt represented by the formula (II). (I) (II), where R represents an alkyl group having 1 to 18 carbon atoms or a haloalkyl group having 1 to 18 carbon atoms, M+ represents a lithium ion, a sodium ion or a potassium ion and X- represents an anion species having a primary acid dissociation constant (pKa1) in a water of conjugate acid thereof of 10. COPYRIGHT: (C)2015,JPOandINPIT
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Paragraph 0045

(2017/08/30)

Process for the preparation of aminomethylene compounds
Aminomethylene compounds of the formula STR1 can be prepared by reaction of C-H acid compounds of the formula STR2 with salts of the formula STR3 in the presence of alkoxides of the formula where the radicals R1 to R4, R7, R10, X- and M1 have the meaning mentioned in the description.
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(2008/06/13)

REACTIVITY AND TAUTOMERISM OF AZOLIDINES. XLIII. KINETICS OF THE METHYLATION OF 2-PHENYLIMINO-4-THIAZOLIDINONE SODIUM SALT WITH DIMETHYL SULFATE IN ACETONITRILE
The kinetics of the methylation of 2-phenylimino-4-thiazolidinone sodium salt with dimethyl sulfate in acetonitrile were studied at 5, 15, and 25 deg C.In acetonitrile the sodium salt exists as an equilibrium mixture of free ions and intimate ion pairs.The reaction rate constants of the free ions were determined by means of Acree's equation.The intimate ion pairs are practically nonreactive particles.The thermodynamic activation parameters were determined from the temperature dependence of the methylation rate constants of the free ions.
Basova, Yu. G.,Ramsh, S. M.,Ginak, A. I.
p. 1940 - 1944
(2007/10/02)

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Chemical Properties

Appearance/Colour :White powder
Melting Point: 210 °C(lit.)
Density: 1.602g/cm³
Merck: 14,6122
PSA: 74.81000
LogP: 0.17380

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