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Chemical Structure| 33413-42-2 Chemical Structure| 33413-42-2

Structure of 33413-42-2

Chemical Structure| 33413-42-2

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Product Details of [ 33413-42-2 ]

CAS No. :33413-42-2
Formula : C13H14O3
M.W : 218.25
SMILES Code : O=C(O)CC1=C(C)CC2=C1C=C(OC)C=C2
MDL No. :MFCD24480100

Safety of [ 33413-42-2 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338

Application In Synthesis of [ 33413-42-2 ]

* 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 [ 33413-42-2 ]

[ 33413-42-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 3240-35-5 ]
  • [ 33413-42-2 ]
  • 1-(4-aminosulfonylphenyl) methylene-5-methoxy-2-methyl-1H-3-indenylacetic acid [ No CAS ]
YieldReaction ConditionsOperation in experiment
With acetic acid; In methanol; potassium hydroxide; Step 1 Preparation of E and Z 1-(4-aminosulfonylphenyl)methylene-5-methoxy-2-methyl-1H-3-indenylacetic acids (2a and 3a) To a solution of 5-methoxy-2-methyl-3-indenylacetic acid (1a) (3.95 g) in 90% methanol (24 ml) containing 85% potassium hydroxide (2.7 g) was added a solution of p-aminosulfonylbenzaldehyde (3.70 g) in 90% methanol (24 ml). The resulting mixture was refluxed under nitrogen for 4-6 hours. A solution of 50% aqueous acetic acid (50 ml) was then added to the reaction mixture during 40 minutes at 50-60 C. The crystals were collected after aging at 15 C. for 1 hour. The crude product was recrystallized five times from acetone-hexane to give pure Z form of 1-(4-aminosulfonylphenyl) methylene-5-methoxy-2-methyl-1H-3-indenylacetic acid (2a) (4.0 g, 57%): m.p. 224-225 C.
With acetic acid; In methanol; potassium hydroxide; Step 1 Preparation of E and Z 1-(4-aminosulfonylphenyl)methylene-5-methoxy-2-methyl-1H-3-indenylacetic acids (2a and 3a) To a solution of 5-methoxy-2-methyl-3-indenylacetic acid (1a) (3.95 g) in 90% methanol (24 ml) containing 85% potassium hydroxide (2.7 g) was added a solution of p-aminosulfonylbenzaldehyde (3.70 g) in 90% methanol (24 ml). The resulting mixture was refluxed under nitrogen for 4-6 hours. A solution of 50% aqueous acetic acid (50 ml) was then added to the reaction mixture during 40 minutes at 50-60 C. The crystals were collected after aging at 15 C. for 1 hour. The crude product was recrystallized five times from acetone-hexane to give pure Z form of 1-(4-aminosulfonylphenyl)methylene-5-methoxy-2-methyl-1H-3-indenylacetic acid (2a) (4.0 g, 57%): m.p. 224-225 C.; Rf =0.45 (silica gel, 10% MeOH in CHCl3 developed 3-4 times). Anal. Calcd for C20 H19 NO5 S: C, 62.33; H, 4.97; N, 3.63; S, 8.32. Found: C, 62.48; H, 5.06; N, 3.60; S, 8.15.
 

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