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[ CAS No. 40789-98-8 ] {[proInfo.proName]}

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Type HazMat fee for 500 gram (Estimated)
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Inaccessible (Haz class 6.1), International USD 150+
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Chemical Structure| 40789-98-8
Chemical Structure| 40789-98-8
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Product Details of [ 40789-98-8 ]

CAS No. :40789-98-8 MDL No. :MFCD00085206
Formula : C4H8OS Boiling Point : -
Linear Structure Formula :H3CC(O)CH(CH3)SH InChI Key :XLMPYCGSRHSSSX-UHFFFAOYSA-N
M.W : 104.17 Pubchem ID :38679
Synonyms :

Safety of [ 40789-98-8 ]

Signal Word:Danger Class:3
Precautionary Statements:P261-P305+P351+P338 UN#:1993
Hazard Statements:H225-H315-H319-H335 Packing Group:Ⅲ
GHS Pictogram:

Application In Synthesis of [ 40789-98-8 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 40789-98-8 ]

[ 40789-98-8 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 40789-98-8 ]
  • [ 34846-90-7 ]
  • [ 14559-13-8 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; sodium methylate; sodium hydrogencarbonate; In water; EXAMPLE 2 The toluene solution of 3-mercapto-2-butanone from the previous step (613 g of ca. 25 wt percent solution) was placed in a clean, dry reactor along with 15 g of methyl-3-methoxyacrylate. The mixture was warmed to 25° C., stirred vigorously, and treated with solid sodium methoxide (8.5 g, ca. 0.1 equiv.) all at once. The remaining methyl-3-methoxyacrylate (151 g) was added in at a rate to keep the temperature at or below 35° C. (2 h). The resulting mixture was allowed to reach room temperature and stir for 21 h. Concentrated hydrochloric acid (88 g) was added to the mixture over 30 min such that the temperature did not exceed 35° C. The resulting mixture was stirred vigorously for 2 h, then treated with 73 g of water, and stirred for 10 min more. The phases were allowed to separate. After standing for 10 min, the aqueous phase was drained from the reactor, and the upper, product phase was washed with 100 g of 5percent sodium bicarbonate solution. After being stirred for 15 min, the phases were allowed to separate. The lower, aqueous phase was drained from the reactor, and the upper, product phase was transferred to a distilling flask. The toluene was distilled through a 5-plate distillation column at 100 mmHg. After a small fraction containing toluene and other low boiling impurities was collected, the product, 3-carbomethoxy-4,5-dimethylthiophene, was distilled through the column at 50 mmHg.
With hydrogenchloride; sodium methylate; sodium hydrogencarbonate; In water; Example 2 The toluene solution of 3-mercapto-2-butanone from the previous step (613 g of ca. 25 wtpercent solution) was placed in a clean, dry reactor along with 15 g of methyl-3-methoxyacrylate. The mixture was warmed to 25°C, stirred vigorously, and treated with solid sodium methoxide (8.5 g, ca. 0.1 equiv.) all at once. The remaining methyl-3-methoxyacrylate (151 g) was added in at a rate to keep the temperature at or below 35°C (2 h). The resulting mixture was allowed to reach room temperature and stir for 21 h. Concentrated hydrochloric acid (88 g) was added to the mixture over 30 min such that the temperature did not exceed 35°C. The resulting mixture was stirred vigorously for 2 h, then treated with 73 g of water, and stirred for 10 min more. The phases were allowed to separate. After standing for 10 min, the aqueous phase was drained from the reactor, and the upper, product phase was washed with 100 g of 5percent sodium bicarbonate solution. After being stirred for 15 min, the phases were allowed to separate. The lower, aqueous phase was drained from the reactor, and the upper. product phase was transferred to a distilling flask. The toluene was distilled through a 5-plate distillation column at 13.3 kPa [100 mmHg]. After a small fraction containing toluene and other low boiling impurities was collected, the product, 3-carbomethoxy-4,5-dimethylthiophene, was distilled through the column at 6.665 kPa [150 mmHg].
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