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Chemical Structure| 16883-16-2 Chemical Structure| 16883-16-2

Structure of 16883-16-2

Chemical Structure| 16883-16-2

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Product Details of [ 16883-16-2 ]

CAS No. :16883-16-2
Formula : C11H8ClNO2
M.W : 221.64
SMILES Code : O=C(Cl)C1=C(C)ON=C1C2=CC=CC=C2
MDL No. :MFCD00052205

Safety of [ 16883-16-2 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H314
Precautionary Statements:P280-P305+P351+P338-P310
Class:8
UN#:3265
Packing Group:

Application In Synthesis of [ 16883-16-2 ]

* 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 [ 16883-16-2 ]

[ 16883-16-2 ] Synthesis Path-Downstream   1~54

  • 2
  • [ 6494-19-5 ]
  • [ 16883-16-2 ]
  • [ 62235-34-1 ]
  • 3
  • [ 1136-45-4 ]
  • [ 16883-16-2 ]
YieldReaction ConditionsOperation in experiment
93% With thionyl chloride; for 3h;Heating / reflux; Example 1; 3-(5-Methyl-3-phenyl-isoxazol-4-yl)-imidazo[l,5-a]pyridinea) S-Methyl-S-phenyl-isoxazole-φcarboxyric acid (pyridin-2-ylmethyl)-amide A mixture of 5-methyl-3-phenyl-isoxazole-4-carboxylic acid (4.06 g, 20 mmol, commercially available) and thionyl chloride (5 mL) was heated under reflux for 3 h. Evaporation of all volatiles afforded 5-methyl-3-phenyl-isoxazole-4-carboxylic acid chloride (4.4 g, 93%) as yellow oil, which was used without further purification in the next reaction. To a mixture of an aqueous solution of 2-picolylamine (0.182 g, 1.68 mmol) in water (2 mL) and ethyl acetate (4 mL) were added sodium hydrogen carbonate (362 mg, 4.2 mmol) in one portion. Then 5-methyl-3-phenyl-isoxazole-4-carboxylic acid chloride (0.31 g, 1.4 mmol) in ethyl acetate (2 mL) was added dropwise with vigorous stirring under ice-bath cooling keeping the temperature at 0 0C. After addition, the reaction mixture was stirred at room temperature for 18 h. The resulting solution was then diluted with ethyl acetate. The organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The combined extracts were then washed with brine, dried over sodium sulphate, and concentrated to afford the title compound (0.38 g, 93%) as a white solid. MS: m/e: 294.1 [M+H]+.
93% With thionyl chloride; for 3h;Reflux; A mixture of 5-methyl-3-phenyl-isoxazole-4-carboxylic acid (l .Og, 4.9mmol, commercially available) and thionyl chloride (5ml) was heated under reflux for 3 h. Removal of excess volatiles by evaporation afforded 5-methyl-3-phenyl-isoxazole-4-carbonyl chloride (1.01 g, 93%) as a yellow oil, which was used without further purification in the next reaction.
With phosphorus pentachloride; In dichloromethane; for 1h;Heating / reflux; A solution of 5-methyl-3-phenylisoxazole-4-carboxylic acid (1 g) and PCIS (1 g) in dichloromethane (20 mL) was refluxed for one hour. Then dichloromethane and POCI3 were removed under reduced pressure to give 5-methyl-3-phenylisoxazole-4-carbonyl chloride.
With thionyl chloride; EXAMPLE 8 5-Methyl-3-phenyl-isoxazole-4-carbonyl Chloride. 5-Methyl-3-phenyl-isoxazole-4-carboxylic acid (0.54 g, 2.56 mmol) was treated with SOCl2 (2 mL) at 70 C. for 1 hr. Concentration in vacuum gave a yellow oil which was used without purification.
With thionyl chloride; at 60℃; for 0.5h;Neat (no solvent); Example 13 N,N-Diethyl-5-methyl-3-phenylisoxazole-4-carboxamide To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat diethylamine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (20 mg). HRMS (ESI, pos. ion) m/z calcd for C15H18N2O2: 258.1368, found 258.1378.; Example 14 N,N-Diisopropyl-5-methyl-3-phenylisoxazole-4-carboxamide To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat diisopropylamine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (15 mg). HRMS (ESI, pos. ion) m/z calcd for C17H22N2O2: 286.1681, found 286.1678.; Example 15 4-(Azetidin-1-ylcarbonyl)-5-methyl-3-phenylisoxazole To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat trimethylene imine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (18 mg). HRMS (ESI, pos. ion) m/z calcd for C14H14N2O2: 242.1055, found 242.1063.

  • 4
  • [ 123-75-1 ]
  • [ 16883-16-2 ]
  • [ 106833-69-6 ]
  • 5
  • [ 110-91-8 ]
  • [ 16883-16-2 ]
  • [ 55153-42-9 ]
  • 6
  • [ 5725-79-1 ]
  • [ 16883-16-2 ]
  • [ 90515-57-4 ]
  • 7
  • [ 16883-16-2 ]
  • [ 24922-32-5 ]
  • [ 90515-60-9 ]
  • 8
  • [ 16883-16-2 ]
  • [ 59813-07-9 ]
  • [ 124953-38-4 ]
  • 9
  • [ 16883-16-2 ]
  • [ 53855-57-5 ]
  • [ 90515-58-5 ]
  • 10
  • [ 16883-16-2 ]
  • [ 90515-46-1 ]
  • [ 90515-61-0 ]
  • 11
  • [ 16883-16-2 ]
  • [ 90836-45-6 ]
  • [ 90539-22-3 ]
  • 12
  • [ 16883-16-2 ]
  • [ 90515-48-3 ]
  • [ 90515-62-1 ]
  • 13
  • [ 16883-16-2 ]
  • [ 108-18-9 ]
  • [ 106833-71-0 ]
YieldReaction ConditionsOperation in experiment
In tetrahydrofuran; at 20℃; To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat diethylamine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (20 mg). HRMS (ESI, pos. ion) m/z calcd for C15H18N2O2: 258.1368, found 258.1378.
  • 14
  • [ 16883-16-2 ]
  • [ 75-65-0 ]
  • 5-methyl-3-phenyl-isoxazole-4-carboxylic acid <i>tert</i>-butyl ester [ No CAS ]
  • 15
  • [ 16883-16-2 ]
  • [ 22179-80-2 ]
  • C18H13Cl2N3O3 [ No CAS ]
  • 16
  • [ 16883-16-2 ]
  • [ 180468-20-6 ]
  • (2R,3R)-3-[(5-methyl-3-phenylisoxazole-4-carbonyl)amino]-1-(1'-methoxycarbonyl-2'-methylpropenyl)-4-oxoazetidine-2-sulfonic acid [ No CAS ]
  • 17
  • [ 16883-16-2 ]
  • [ 180468-23-9 ]
  • (2R,3S)-3-[(5-methyl-3-phenylisoxazole-4-carbonyl)amino]-1-(1'-methoxycarbonyl-2'-methylpropenyl)-4-oxoazetidine-2-sulfonic acid [ No CAS ]
  • 18
  • [ 16883-16-2 ]
  • methyl 1-(4-methoxyphenyl)sulfonyl-4-(tert-butoxycarbonyl)piperazine-2-carboxylate hydrochloride [ No CAS ]
  • 1-(4-methoxy-benzenesulfonyl)-4-(5-methyl-3-phenyl-isoxazole-4-carbonyl)-piperazine-2-carboxylic acid methyl ester [ No CAS ]
  • 19
  • [ 16883-16-2 ]
  • [ 109-89-7 ]
  • [ 313392-96-0 ]
YieldReaction ConditionsOperation in experiment
In tetrahydrofuran; at 20℃; To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat diethylamine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (20 mg). HRMS (ESI, pos. ion) m/z calcd for C15H18N2O2: 258.1368, found 258.1378.
  • 20
  • [ 503-29-7 ]
  • [ 16883-16-2 ]
  • [ 1003558-71-1 ]
YieldReaction ConditionsOperation in experiment
In tetrahydrofuran; at 20℃; To 3-phenyl-5-methylisoxazol-4-carboxylic acid (25 mg, 0.10 mmol) was added thionyl chloride (1 mL) and the neat solution allowed to stir 60 C. After 30 min, excess thionyl chloride was evaporated and neat diethylamine was added and allowed to stir overnight at ambient temperature. The residue was purified using reversed phase HPLC to afford the title compound (20 mg). HRMS (ESI, pos. ion) m/z calcd for C15H18N2O2: 258.1368, found 258.1378.
  • 21
  • [ 16883-16-2 ]
  • 1-(4-methoxy-benzenesulfonyl)-4-(5-methyl-3-phenyl-isoxazole-4-carbonyl)-piperazine-2-carboxylic acid hydroxyamide [ No CAS ]
  • 22
  • [ 16883-16-2 ]
  • [ 93599-37-2 ]
  • 23
  • [ 16883-16-2 ]
  • [ 93599-45-2 ]
  • 24
  • [ 16883-16-2 ]
  • [ 99298-70-1 ]
  • 25
  • [ 16883-16-2 ]
  • [ 99298-84-7 ]
  • 26
  • [ 16883-16-2 ]
  • [ 93599-48-5 ]
  • 27
  • [ 16883-16-2 ]
  • [ 93599-50-9 ]
  • 28
  • [ 16883-16-2 ]
  • [ 99298-86-9 ]
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  • [ 16883-16-2 ]
  • [ 99298-71-2 ]
  • 30
  • [ 16883-16-2 ]
  • [ 93599-49-6 ]
  • 31
  • [ 16883-16-2 ]
  • [ 99298-72-3 ]
  • 32
  • [ 16883-16-2 ]
  • [ 99298-87-0 ]
  • 33
  • [ 16883-16-2 ]
  • [ 99299-07-7 ]
  • 34
  • [ 16883-16-2 ]
  • [ 99299-09-9 ]
  • 35
  • [ 16883-16-2 ]
  • [ 99298-73-4 ]
  • 36
  • [ 16883-16-2 ]
  • [ 99298-77-8 ]
  • 37
  • [ 16883-16-2 ]
  • [ 99298-79-0 ]
  • 38
  • [ 16883-16-2 ]
  • [ 99298-74-5 ]
  • 39
  • [ 16883-16-2 ]
  • [ 99298-76-7 ]
  • 40
  • [ 16883-16-2 ]
  • [ 99298-75-6 ]
  • 41
  • [ 16883-16-2 ]
  • [ 99298-78-9 ]
  • 42
  • [ 16883-16-2 ]
  • [ 91569-55-0 ]
  • 43
  • [ 16883-16-2 ]
  • [ 92029-28-2 ]
  • 44
  • [ 16883-16-2 ]
  • [ 90515-63-2 ]
  • 45
  • [ 16883-16-2 ]
  • [ 7486-35-3 ]
  • [ 641627-05-6 ]
YieldReaction ConditionsOperation in experiment
76% trans-benzyl(chloro)bis(triphenylphosphine)palladium (II); In chloroform; at 20 - 68℃; for 3h; A solution of tributyl(vinyl)tin (2.74 mL, 9.47 mmol) in chloroform (8 mL) was added dropwise to a solution of 5-methyl-3-phenylisoxazole 4-carbonyl chloride (2.00 g, 9.02 mmol) and trans-benzyl(chloro)bis(triphenylphosphine)palladium (II) (36 mg, 0.048 mmol) in chloroform (2 mL) at room temperature under dry air. The solution was stirred at 68 C. for 1.5 h at which time a second portion of benzyl(chloro)bis(triphenylphosphine)palladium (II) (9 mg) was added and the mixture stirred at 68 C. for a further 1.5 h. The mixture was diluted with diethyl ether and washed with water. The ethereal layer was separated, shaken with aqueous potassium fluoride solution and mixture aged for 0.25 h, at which time the resulting white precipitate (tributyltin fluoride) was filtered off through a pad of celite. This process was repeated (×1). The resulting ethereal filtrate was washed with brine (×1), dried (MgSO4) and evaporated in vacuo. The residue was partitioned between acetonitrile and isohexane and the acetonitrile layer separated, washed with isohexane (×2) and evaporated in vacuo. The residue was purified by flash chromatography on silica gel, eluting with 15% ethyl acetate in isohexane, to give the title-compound (1.453 g, 76%), 1H NMR (360 MHz, CDCl3) δ7.54-7.44 (5H, m), 6.37-6.24 (2H, m), 5.66 (1H, dd, J=9.4 and 2.5 Hz), 2.68 (3H, s).
  • 46
  • [ 31554-37-7 ]
  • [ 16883-16-2 ]
  • [ 641626-78-0 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In dichloromethane; at 0 - 25℃; for 2h; The solid obtained from step a) was dissolved in dichloromethane (20 ml) and cooled to 0 C. Triethylamine (1 ml, 7.5 mmol) was added followed by 3-phenyl-5-methyl-4-isoxazolecarbonyl chloride (0.9 ml (1.8 mmol) of a 1.96M solution in dichloromethane. The reaction was warmed to 25 C. and stirred for 2 h. Water (10 ml) was added and the reaction mixture extracted into dichloromethane. The organic layer was dried (MgSO4) and evaporated to obtain the title compound as a brown oil m/z (ES+) 371(M+H)+.
  • 47
  • [ 39157-79-4 ]
  • [ 16883-16-2 ]
  • (5-methyl-3-phenylisoxazol-4-yl)(2-pyrrolidin-1-yl-3H-inden-1-yl)-methanone [ No CAS ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In dichloromethane; at 0 - 25℃; for 2h; The solid obtained from step a) was dissolved in dichloromethane (20 ml) and cooled to 0 C. Triethylamine (1 ml, 7.5 mmol) was added followed by 3-phenyl-5-methyl-4-isoxazolecarbonyl chloride (0.9 ml (1.8 mmol) of a 1.96M solution in dichloromethane). The reaction was warmed to 25 C. and stirred for 2 h. Water (10 ml) was added and the reaction mixture extracted into dichloromethane. The organic layer was dried (MgSO4) and evaporated to obtain the title compound as a brown oil m/z (ES+) 371(M+H)+.
  • 48
  • [ 16883-16-2 ]
  • [ 243666-11-7 ]
  • 5-methyl-3-phenyl-N-(7-trifluoromethyl-4-quinolinyl)-4-isoxazolecarboxamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
With pyridine; In dichloromethane; at 70℃; 5-METHYL-3-PHENYLISOXAZOLE-4-CARBONYL chloride (100 mg) and 4-amino-7- TRIFLUOROMETHYLQUINOLINE (250 mg) were dissolved in dichlorormethane (5 mL) and pyridine (0.3 mL). The reaction solution was heated at 70 C overnight and then diluted with ethyl acetate (60 mL). The organic solution was washed with water (60 mL), dried, evaporated and purified by flash column chromatography (EtOAc/hexanes = 1/6) to give 5-methyl-3-phenyl- N- (7-TRIFLUOROMETHYL-4-QUINOLINYL)-4-ISOXAZOLECARBOXAMIDE (100 mg) as a white solid. IH NMR (CD3) : 8 2.91 (s, 3H), 7.33-7. 69 (m, 9H), 8.39 (s, 1H, NH), 8.99 (d, J= 5. 1 Hz, 1H) ; 19F NMR (282 MHz, CDC13) : 8-63. 26; LCMS: ret. time: 34.04 min.; purity: 98.90% ; MS (M/E) : 398.77 (MH+).
  • 49
  • [ 607-67-0 ]
  • [ 16883-16-2 ]
  • 5-methyl-3-phenyl-4-isoxazolecarboxylic acid 2-methyl-4-quinolinyl ester [ No CAS ]
YieldReaction ConditionsOperation in experiment
With pyridine; In dichloromethane; at 70℃; 5-METHYL-3-PHENYLISOXAZOLE-4-CARBONYL chloride (100 mg) and 4-hydroxy-2- methylquinoline (250 mg) were dissolved in dichlorormethane (10 mL) and pyridine (0.2 mL). The reaction solution was heated at 70 C overnight and then diluted with ethyl acetate (60 mL). The organic solution was washed with water (60 mL), dried, evaporated and purified by flash column chromatography (EtOAc/hexanes = 1/2) to give 5-methyl-3-phenyl- 4-isoxazolecarboxylic acid, 2-methyl-4-quinolinyl ester (100 mg). IH NMR (CDCI3) : 8 2. 74 (s, 3H), 2.91 (s, 3H), 7.29 (s, 1H), 7.33-7. 46 (m, 5H), 7.64-7. 71 (m, 3H), 8.01 (td, J= 0.9 and 8.4 Hz, 1H) ; LCMS: ret. time: 23.10 min.; purity: 100%; MS (M/E) : 345.02 (MH+).
  • 50
  • 1,1'-bipyridyl [ No CAS ]
  • [ 16883-16-2 ]
  • [ 372-09-8 ]
  • 3-(5-methyl-3-phenyl-isoxazol-4-yl)-3-oxo-propionitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
67% With hydrogenchloride; n-butyllithium; In tetrahydrofuran; EXAMPLE 9 3-(5-Methyl-3-phenyl-isoxazol-4-yl)-3-oxo-propionitrile. To cyanoacetic acid (0.43 g, 5.12 mmol) in THF at -78 C., containing one crystal of 1,1'-bipyridyl was added n-butyl lithium (6.4 mL, 10.24 mmol). The temperature was allowed to warm to 0 C. resulting in a pink colored solution. After cooling to -78 C., 5-Methyl-3-phenyl-isoxazole-4-carbonyl chloride (0.567 g, 2.56 mmol) in THF (5 mL) was added dropwise. The mixture was stirred at -78 C. for 1 hr. and at ambient temperature for an addition 1 hr. The reaction was quenched with 1N HCl (13 mL0 and extracted twice with CH2Cl2. Combined extracts were washed with saturated NaHCO3, brine, dried over MgSO4 to give the title compound (0.391 g, 67% yield).
  • 51
  • [ 16883-16-2 ]
  • [ 6711-46-2 ]
  • [ 88099-08-5 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In tetrahydrofuran; hexane; dichloromethane; Step 1. N-Phenyl-N-(2-Dimethylaminoethyl)-5-Methyl-3-Phenyl-4-Isoxazole Carboxamide A mixture of 24.6 grams (0.15 mole) of N,N-dimethyl-N'-phenyl-ethylenediamine and 18.2 grams (0.18 mole) of triethylamine in 500 milliliters of tetrahydrofuran (THF) is cooled to 0 C. and 39.8 grams (0.18 mole) of 5-methyl-3-phenyl-4-isoxazole carbonyl chloride in 100 milliliters of tetrahydrofuran is added dropwise. After the addition is complete, the mixture is warmed to room temperature and stirred for 4 hours. The resulting suspension is filtered and the THF removed in vacuo. The residue is dissolved in methylene chloride and washed with 2N sodium hydroxide and water and then dried over magnesium sulfate. The mixture is filtered and the solvent removed by evaporation. The residue is then treated with hexane to yield crystals of N-phenyl-N-(2-dimethylaminoethyl)-5-methyl-3-phenyl-4-isoxazole carboxamide; M.P. 88-89 C. When the N,N-dimethyl-N'-phenyl-ethylene-diamine in the above reaction is replaced by an equivalent amount of
  • 52
  • [ 16883-16-2 ]
  • [ 50693-82-8 ]
  • [ 91457-58-8 ]
YieldReaction ConditionsOperation in experiment
With sodium hydroxide; sodium sulfate; In diethyl ether; acetone; Step II. 1-(5-methyl-3-phenyl-4-isoxazoloyl)3-ethylguanidine A mixture of 8.80 g of an aqueous sodium hydroxide solution (50%), ethylguanidine sulfate (14.98 g), and 100 ml of acetone, are stirred for 21/2 hrs at RT. The resulting mixture is then treated with anhydrous sodium sulfate (6.0 g) and stirring is continued for 1 hr. A solution of 5-methyl-3-phenyl-4-isoxazoloyl chloride (11.08 g) in 50 ml acetone is added dropwise and the resulting mixture is stirred overnight at RT. The reaction mixture is filtered, the filtrate diluted with 100 ml of saturated aqueous sodium bicarbonate and the acetone evaporated in vacuo. The aqueous residue is diluted with 100 ml H2 O and extracted with two 100 ml portions of methylene chloride. The combined organic extract is dried, filtered and concentrated in vacuo. The residue is acidified with ethereal hydrochloric acid and evaporated in vacuo. The residue is stirred with 200 ml of diethyl ether, the solid collected and washed with diethyl ether. Recrystallization from acetonitrile affords 11.7 g of white crystalline product, M.P. 215 C.
  • 53
  • [ 35166-26-8 ]
  • [ 16883-16-2 ]
YieldReaction ConditionsOperation in experiment
With pyridine; thionyl chloride; Step I. 5-methyl-3-phenyl- 4-isoxazoloyl chloride A mixture of 111.76 g of 5-methyl-3-phenyl-4-isoxazoloyl carboxylic acid, 6 drops of pyridine and 29.5 ml of thionyl chloride is stirred under reflux for 4 hrs. The excess thionyl chloride is evaporated in vacuo. Distillation of the residue yields 113.74 g of yellow liquid.
  • 54
  • [ 3731-51-9 ]
  • [ 16883-16-2 ]
  • 5-methyl-3-phenyl-isoxazole-4-carboxylic acid (pyridin-2-ylmethyl)amide [ No CAS ]
YieldReaction ConditionsOperation in experiment
93% With sodium hydrogencarbonate; In water; ethyl acetate; at 0 - 20℃; for 18h; Example 1; 3-(5-Methyl-3-phenyl-isoxazol-4-yl)-imidazo[l,5-a]pyridinea) S-Methyl-S-phenyl-isoxazole-φcarboxyric acid (pyridin-2-ylmethyl)-amide A mixture of 5-methyl-3-phenyl-isoxazole-4-carboxylic acid (4.06 g, 20 mmol, commercially available) and thionyl chloride (5 mL) was heated under reflux for 3 h. Evaporation of all volatiles afforded 5-methyl-3-phenyl-isoxazole-4-carboxylic acid chloride (4.4 g, 93%) as yellow oil, which was used without further purification in the next reaction. To a mixture of an aqueous solution of 2-picolylamine (0.182 g, 1.68 mmol) in water (2 mL) and ethyl acetate (4 mL) were added sodium hydrogen carbonate (362 mg, 4.2 mmol) in one portion. Then 5-methyl-3-phenyl-isoxazole-4-carboxylic acid chloride (0.31 g, 1.4 mmol) in ethyl acetate (2 mL) was added dropwise with vigorous stirring under ice-bath cooling keeping the temperature at 0 0C. After addition, the reaction mixture was stirred at room temperature for 18 h. The resulting solution was then diluted with ethyl acetate. The organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The combined extracts were then washed with brine, dried over sodium sulphate, and concentrated to afford the title compound (0.38 g, 93%) as a white solid. MS: m/e: 294.1 [M+H]+.
 

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3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carbonylchloride

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