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Chemical Structure| 90345-66-7 Chemical Structure| 90345-66-7

Structure of 90345-66-7

Chemical Structure| 90345-66-7

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Product Details of [ 90345-66-7 ]

CAS No. :90345-66-7
Formula : C8H8O5
M.W : 184.15
SMILES Code : O=C(C1=CC=C(COC(C)=O)O1)O
MDL No. :MFCD06203132
InChI Key :VEHIMKWMEKVUMD-UHFFFAOYSA-N
Pubchem ID :10330015

Safety of [ 90345-66-7 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Application In Synthesis of [ 90345-66-7 ]

* 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 [ 90345-66-7 ]

[ 90345-66-7 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 1122-58-3 ]
  • [ 6338-41-6 ]
  • [ 90345-66-7 ]
YieldReaction ConditionsOperation in experiment
With pyridine; acetic anhydride; In dichloromethane; toluene; (a) 5-Acetoxymethylfuran-2-carboxylic acid A mixture of 5-hydroxymethylfuran-2-carboxylic acid (5.90 g), dry dichloromethane (100 ml), pyridine (6.71 ml), 4-dimethyl-aminopyridine (507 mg), and acetic anhydride (4.21 ml) was stirred for 2 hours at room temperature. The mixture was diluted with ethyl acetate and washed with 5M hydrochloric acid and brine (3 times), dried (MgSO4), and evaporated. The residue was re-evaporated twice from dry toluene to give the title acid as a solid (5.00 g); deltaH [(CD3)2 CO) 2.05 (3 H, s), 5.11 (2 H, s), 6.62 (1 H, d, J 4 Hz), 7.17 (1 H, d, J 4 Hz) and 8.31 (1 H, br s).
  • 2
  • [ 6338-41-6 ]
  • [ 108-24-7 ]
  • [ 90345-66-7 ]
YieldReaction ConditionsOperation in experiment
93% With triethylamine; In diethyl ether; at 20℃; for 14h;Cooling with ice; 15.64 g of HMFCA (104 mmol), 300 mL of ethyl ether, and 20.24 g of triethylamine (NEt3, 0.2 mol) were added into a twin neck bottle (250 mL) and stirred to be completely dissolved. 11.78 mL of acetic anhydride (124.8 mmol) was then slowly added into the twin neck bottle in an ice bath, and the ice bath was then removed after the addition of acetic anhydride for slowly warming up the reaction to room temperature. The reaction was continued at room temperature for 14 hours, and 3M HCl was then added into the twin neck bottle to acidify the solution in the twin neck bottle. The acidified solution was extracted by de-ionized water three times, and the organic phase of the extractions was collected and then dried by anhydrous MgSO4. The organic phase was concentrated to obtain a yellow solid. The yellow solid was washed by n-hexane and then dried to obtain 17.84 g of 5-(acetoxymethyl)-2-furoic acid product (yield=93percent), as shown in Formula 1 with R1 being methyl group. The above reaction is shown in Formula 9. The product of Formula 9 had NMR spectra as below: 1H NMR (400 M Hz, CDCl3): 7.23 (d, 1H, J=3.5 Hz), 6.51 (d, 1H, J=3.5 Hz), 5.07 (s, 2H), 2.07 (s, 3H). 13C NMR (100 M Hz, CDCl3): 170.6, 162.5, 154.4, 144.0, 120.5, 112.5, 57.8, 20.7. The product of Formula 9 had mass spectrum as below: HRMS (EI, m/z): calcd. for C8H8O5 184.15. found 184.11 (M+).
93% With triethylamine; In diethyl ether; at 20℃; for 14h;Cooling with ice; 15.64 g (104 mmol) of HMFCA,300 mL of diethyl ether,Was added with 20.24 g (0.2 mol) of triethylamineAfter the 500 mL double-necked flask,Stirring until complete dissolution.A solution of 11.78 mL (124.8 mmol)Of acetic anhydride (Acetic anhydride) into the double-necked flask,The ice bath was then removed and the reaction temperature was slowly returned to room temperature,Followed by reaction at room temperature for 14 hours.After completion of the reaction, 3M HCl was added to the flask,So that the solution becomes acidic.The acidic solution was then extracted three times with deionized water and the organic layer was taken,The organic layer was again removed with anhydrous magnesium sulfate.Concentration of the organic layer gave a yellow solid,The yellow solid was washed with n-hexane and the solid was dried,To give 17.84 g of the (2-furoic acid-5-hydroxymethyl) acetate product (as in Formula 1, R1 is methyl) in 93percent yield. The above reaction is shown in Formula 9 below.
 

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