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Chemical Structure| 83507-70-4 Chemical Structure| 83507-70-4

Structure of 83507-70-4

Chemical Structure| 83507-70-4

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Product Details of [ 83507-70-4 ]

CAS No. :83507-70-4
Formula : C15H19NO5
M.W : 293.32
SMILES Code : O=C(OCC)C(C(OCC)=O)=CNC1=CC=C(OC)C=C1
MDL No. :MFCD00711864

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Application In Synthesis of [ 83507-70-4 ]

* 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 [ 83507-70-4 ]

[ 83507-70-4 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 83507-70-4 ]
  • [ 77156-78-6 ]
YieldReaction ConditionsOperation in experiment
71% In diphenyl ether-biphenyl eutectic; at 250℃; for 1.5h;Product distribution / selectivity; b) Ethyl 4-hydroxy-6-(methyloxy)-3-quinolinecarboxylate; Diethyl ([4-(methyloxy)phenyl]amino}methylidene)propanedioate (100 g, 0.34 mol) was taken up in Dowtherm (500 mL) and heated at 250 0C for 1.5 h; 75% conversion. The reaction solution was cooled, treated with hexanes (750 mL) and cooled to 0 0C in ice bath. The brown solid was filtered off and washed with hexanes (2X) and dried under vacuum to give 60 g (71%).
66% With trichlorophosphate; at 75℃; for 8h; General procedure: Polyphosphoric acid (PPA) (2 equiv by weight) was added to corresponding intermediate 1 (40 mmol) to this phosphorousoxychloride (POCl3) (10 mmol) was added. The reaction mixture was heated to 75 C for 8 h, monitored by TLC, after completion of the reaction. The reaction mixture was quenched slowly with 10% sodium hydroxide solution by keeping it in an ice bath and the PH was adjusted to a pH ~ 7, the solid separated was filtered, dried and washed with diethyl ether (3*20 mL) to afford desired compound in good yield.
41% In diphenylether; at 243 - 250℃; for 3h;Inert atmosphere; A solution of diethyl 2-[(4-methoxyanilino)methylene]propanedioate (5, 71.4 g, 0.24 mol) in 150 ml of diphenyl ether was slowly heated in a metal bath to 243 C. During 3 h at this temperature 15 ml liquid were distilled off. The reaction mixture was cooled to room temperature and taken up in 250 ml hexane. This mixture was stirred for 3 h, then filtered. The solid was washed with hexane and dried to deliver ethyl 4-hydroxy-6-methoxyquinoline-3-carboxylate (6, 25.0 g, 0.10 mol, 41 %) which was pure enough to be directly used in the next step. 1H-NMR (CDCl3): delta = 1.28 (t, 3H), 3.85 (s, 3H), 4.21 (q, 2H), 7.34 (dd, 1H), 7.55 - 7.62 (m, 2H), 8.49 (s, 1H). LC-MS: Rt = 1.17 min; MS: m/z = 248 [M+1]+.
23 g With Dowtherm A; at 250℃; for 3h; Compound 2 (61 g) was taken up in dowtherm( 400ml) and heated at 250C for 3h. The reaction mixture was cooled to (RT) and treated with pentane (300 mL) and filtered under suction. The resulting solids were washed thoroughly with excess of pentane and dried under vacuum to give 3 (23 g).

 

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