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Chemical Structure| 35615-98-6

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Product Details of [ 35615-98-6 ]

CAS No. :35615-98-6
Formula : C13H12O2
M.W : 200.23
SMILES Code : O=C(OC)C1=C2C=CC=CC2=C(C)C=C1
MDL No. :MFCD06203861

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Application In Synthesis of [ 35615-98-6 ]

* 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 [ 35615-98-6 ]

[ 35615-98-6 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 186581-53-3 ]
  • [ 4488-40-8 ]
  • [ 35615-98-6 ]
  • 2
  • [ 67-56-1 ]
  • [ 4488-40-8 ]
  • [ 35615-98-6 ]
YieldReaction ConditionsOperation in experiment
97% With thionyl chloride; at 60℃; To a solution of 4-methyl-1-naphthalenecarboxylic acid (4.14 g, 22.2 mmol) in methanol (50 ml) was added thionyl chloride (3 ml), and the mixture was stirred at 60C overnight. The reaction solution was concentrated, water (100 ml) was added and the mixture was extracted with ethyl acetate (100 ml×2). The extract was washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine, dried over anhydrous magnesium sulfate and evaporated under reduced pressure to give methyl 4-methyl-1-naphthalenecarboxylate (4.32 g, 97%) as a colorless oil. IR nu maxKBrcm-1: 1715, 1591.1H-NMR (CDCl3) delta: 2.75 (3H, s) , 3.99 (3H, s) , 7.35 (1H, d, J = 7.6 Hz), 7.50-7.68 (2H, m), 8.00-8.14 (2H, m), 8.92-9.02 (1H, m).
94.5% With hydrogenchloride; at 0℃; for 16.0833h;Heating / reflux; HCl was bubbled through a solution of 4-methyl-l -naphthoic acid (3.72 g, 20 mmol) in dry MeOH (200 ml) at 0 0C for 5 min. The resulting mixture was then refluxed for 16 h. Solvent was removed in vacuo and the residue dissolved in EtOAc and washed with NaOH (IN, 2 x 20 ml). The organic layer was then washed with water, brine, dried over MgSO4, filtered, and concentrated to afford methyl 4-methyl- 1-naphthalenecarboxylate (3.79 g, 94.5%) as an off white solid.
With hydrogenchloride; at 0 - 20℃; for 19h; Synthesis Example 17-1: Synthesis of methyl 4-methyl-1-naphthalene carboxylate (Compound III-2) 250.6 mg of commercially available 4-methyl-1-naphtalene carboxylate was dissolved in 7. 5 ml ofmethanol, followedby aerating with hydrogen chloride gas under ice-cold condition. After that, the mixture was stirred for 19 hours at room temperature and then the solvent was distilled off. The residue was dissolved in chloroform and was then washed with a 1 mol/l sodium hydroxide aqueous solution and dried with anhydrous sodium sulfate. Subsequently, the solvent was distilled off and dried under reduced pressure, and 269.9 mg of the above-mentioned compound was obtained as a colorless oily product. MS(FAB,Pos.):m/z=200[M+],201[M+1]+ 1H-NMR(500MHz,CDCl3):delta=2.73(3H,s),3.98(3H,s),7.33(1H,d,J=7.3H z),7.61(1H,d,J=8.5,6.8Hz),7.56(1H,dd,J=8.3,6.8Hz),8.04(1H,d,J =8.3Hz),8.08(1H,d,J=7.3Hz),8.97(1H,d,J=8.5Hz).
  • 3
  • [ 4488-40-8 ]
  • [ 35615-98-6 ]
YieldReaction ConditionsOperation in experiment
With sodium hydroxide; In methanol; chloroform; Example 17-1 Synthesis of methyl 4-methyl-1-naphthalene carboxylate (Compound III-2) Commercially available 4-methyl-1-naphthalenecarboxylic acid (250.6 mg) was dissolved in methanol (7.5 ml). Hydrogen chloride gas was blown into the solution for five minutes while cooling with ice. Then, the mixture was stirred for 19 hours at room temperature and the solvent was removed by distillation. The residue was dissolved in chloroform, washed with 1 mol/l aqueous solution of sodium hydroxide, and dried over anhydrous sodium sulfate. The solvent was removed by distillation. The residue was dried under reduced pressure to obtain the target compound (269.9 mg) as colorless oil. MS(FAB,Pos.):m/z=200[M+],201[M+1]+1H-NMR(500MHz,CDCl3):delta=2.73(3H,s),3.98(3H,s),7.33(1H,d,J= 7.3Hz),7.61(1H,dd,J=8.5,6.8Hz),7.56(1H,dd,J=8.3,6.8Hz),8.04 (1H,d,J=8.3Hz),8.08(1H,d,J=7.3Hz),8.97(1H,d,J=8.5Hz).
  • 4
  • [ 4488-40-8 ]
  • [ 74-88-4 ]
  • [ 35615-98-6 ]
YieldReaction ConditionsOperation in experiment
99% Preparation 50: 4-Methyl-naphthalene-1-carboxylic acid methyl ester To a stirred solution of 4-methyl-naphthalene-1-carboxylic acid (10 g, 53.70 mmol) in dry DMF (50 mL) was added potassium carbonate (11.14 g, 80.55 mmol) at room temperature. Resulting reaction mixture was stirred for 30 minutes at room temperature. Then reaction mixture was cooled to 0 C. and methyl iodide (11.44 g, 3.04 mL, 80.55 mmol) was added dropwise. Resulting reaction mixture was stirred for 3 hours at room temperature. Progress of reaction was monitored by TLC using 10% EtOAc in hexane. Rf of new spot and stating material was 0.7 and 0.1, respectively. After consumption of starting material, reaction mixture was quenched with ice cold water (150 mL) and extracted with EtOAc (2×150 mL). Combined organic layer was washed with water (300 mL), brine (200 mL) and dried over sodium sulphate. Organic layer was evaporated in vacuo to afford orange colored thick oil. Crude compound was purified by column chromatography using 100-200 mesh silica gel. Desired compound was eluted in 9% in EtOAc in hexane to afford colorless liquid (10.85 g, 99%). 1H NMR (400 MHz, CDCl3) delta: 2.73 (s, 3 H), 3.98 (S, 3H), 7.34 (d, J=7.4 Hz, 1H), 7.54-7.63 (m, 2H), 8.04 (d, J=7.92 Hz, 1H), 8.08 (d, J=7.44 Hz, 1H), 8.95 (d, J=8.12 Hz, 1H); LC-MS (m/z): =201.10 (M+H).
 

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