4-propylphenol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 10.0 g of dicyclohexylcarbodiimide in 20 ml of toluene are added with water cooling to a mixture of 9.1 g of 4-trifluoromethoxybenzoic acid, 6.0 g of 4-propylphenol, 2.7 g of dimethylaminopyridine and 30 ml of toluene. The mixture is stirred for 2 hours, 1 g of oxalic acid is added, and the mixture is stirred for a further hour and filtered with suction. The filtrate is washed by shaking with 1M HCl, the phases are separated, and the organic phase is washed by shaking with 1M NaOH and worked up. After purification by chromatography and/or crystallization, 4-propylphenyl 4-(trifluoromethoxy)-benzoate having C 59° I is obtained. the mixture is stirred for a further hour filtered with suction The filtrate is washed by shaking with 1M HCl the phases are separated the organic phase is washed by shaking with 1M NaOH After purification by chromatography and/or crystallization

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyldiisopropylamine (10.3 mL) and chloromethyl methyl ether (4.5 mL) were added to a solution of 4-propylphenol (4.09 g) in methylene chloride (60 mL) under ice cooling to form a reaction solution. This reaction solution was stirred for 15 minutes under ice cooling, and then left overnight at normal temperature. Water was added to the reaction solution, and the reaction solution was extracted with ethyl acetate. The extract was washed with water and saturated brine in that order, and then dried over anhydrous sodium sulfate. The anhydrous sodium sulfate was removed by filtration, and then the solvent was removed by distillation under reduced pressure. The resultant product was purified by silica gel column chromatography (hexane:ethyl acetate=9:1) to obtain the target product (4.50 g) as a colorless oil. to form a reaction solution left overnight at normal temperature the reaction solution was extracted with ethyl acetate The extract was washed with water and saturated brine in that order dried over anhydrous sodium sulfate The anhydrous sodium sulfate was removed by filtration the solvent was removed by distillation under reduced pressure The resultant product was purified by silica gel column chromatography (hexane:ethyl acetate=9:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 5.0 g of 4-propylphenol and 35 ml of acetic acid, a mixture of 3.80 g of 61% nitric acid and 10 ml of acetic acid was added dropwise with the temperature kept at 10-15° C., which was stirred for four hours. The reaction mixture was poured into ice water and extracted with ethyl acetate, The combined organic layers were washed with water, a saturated aqueous solution of sodium hydrogencarbonate and a saturated sodium chloride solution, dried over magnesium sulfate, and then concentrated under reduced pressure to give 6.65 g of 4-propyl-2-nitrophenol. was added dropwise with the temperature kept at 10-15° C. extracted with ethyl acetate The combined organic layers were washed with water a saturated aqueous solution of sodium hydrogencarbonate and a saturated sodium chloride solution, dried over magnesium sulfate concentrated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 5.0 g of 4-propylphenol and 35 ml of acetic acid, a mixture of 3.80 g of 61% nitric acid and 10 ml of acetic acid was added dropwise with the temperature kept at 10-15° C., which was stirred for four hours. The reaction mixture was poured into ice water and extracted with ethyl acetate, The combined organic layers were washed with water, a saturated aqueous solution of sodium hydrogencarbonate and a saturated sodium chloride solution, dried over magnesium sulfate, and then concentrated under reduced pressure to give 6.65 g of 4-propyl-2-nitrophenol. was added dropwise with the temperature kept at 10-15° C. extracted with ethyl acetate The combined organic layers were washed with water a saturated aqueous solution of sodium hydrogencarbonate and a saturated sodium chloride solution, dried over magnesium sulfate concentrated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Anhydrous potassium carbonate (14.9 g, 0.12 mol) was added to a mixture of 4-propylphenol (13.6 g, 0.10 mol) and 4-fluorobenzaldehyde (12.4 g, 0.10 mol) in N,N-dimethylacetamide (100 mL) under argon. The heterogeneous mixture was brought to reflux, maintained at that temperature for 5 h, then cooled to RT. Water (100 mL) and CH2Cl2 (100 mL) were added, resulting in a tri-phase system. The bottom layer was removed; the middle layer was dried over MgSO4 ; and, the top layer was extracted with CH2Cl2 (100 mL) and dried over MgSO4. The dried layers were combined and concentrated in vacuo at 50° C. to give an orange oil. The crude product was purified by distillation to give title compound (16.6 g, 69%) as a colorless oil. bp 138°-150° C. (0.2 mm Hg) to reflux maintained at that temperature for 5 h resulting in a tri-phase system The bottom layer was removed the middle layer was dried over MgSO4 and, the top layer was extracted with CH2Cl2 (100 mL) dried over MgSO4 concentrated in vacuo at 50° C. to give an orange oil The crude product was purified by distillation

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of diisopropylazodicarboxylate (2.12 g, 10.5 mmol) in THF (25 mL) was added via syringe pump over 1.5 h to a mixture of 4-propylphenol (purchased from Aldrich Chemical Co.) (1.36 g, 10.0 mmol), 6-bromo-1-hexanol (purchased from Aldrich Chemical Co.) (1.81 g, 10.0 mmol), and triphenylphosphine (2.75 g, 10.5 mmol) in THF (25 mL) at 0° C. under argon. The slightly yellow reaction was stirred at 0° C. for 30 min, whereupon additional triphenylphosphine (262 mg, 1.00 mmol) was added, followed by addition of diisopropyl-, azodicarboxylate (200 mL, 1.0 mmol) over 30 min. The reaction was allowed to warm to RT, at which time silica gel (15 g) was added. The mixture was concentrated in vacuo and the white powder obtained was purified by flash chromatography on silica gel (150 g) eluted with a step gradient of hexane to 2:98 EtOAc/hexane. The slightly impure product obtained was rechromatographed on silica gel (150 g) eluted with 1:99 EtOAc/hexane to give title compound (2.00 g, 67%) as a colorless oil. The slightly yellow reaction was added was added The mixture was concentrated in vacuo the white powder obtained was purified by flash chromatography on silica gel (150 g) eluted with a step gradient of hexane to 2:98 EtOAc/hexane The slightly impure product obtained was rechromatographed on silica gel (150 g) eluted with 1:99 EtOAc/hexane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of diisopropylazodicarboxylate (2.12 g, 10.5 mmol) in THF (25 mL) was added via syringe pump over 1.5 h to a mixture of 4-propylphenol (purchased from Aldrich Chemical Co.) (1.36 g, 10.0 mmol), 6-bromo-1-hexanol (purchased from Aldrich Chemical Co.) (1.81 g, 10.0 mmol), and triphenylphosphine (2.75 g, 10.5 mmol) in THF (25 mL) at 0° C. under argon. The slightly yellow reaction was stirred at 0° C. for 30 min, whereupon additional triphenylphosphine (262 mg, 1.00 mmol) was added, followed by addition of diisopropyl-, azodicarboxylate (200 mL, 1.0 mmol) over 30 min. The reaction was allowed to warm to RT, at which time silica gel (15 g) was added. The mixture was concentrated in vacuo and the white powder obtained was purified by flash chromatography on silica gel (150 g) eluted with a step gradient of hexane to 2:98 EtOAc/hexane. The slightly impure product obtained was rechromatographed on silica gel (150 g) eluted with 1:99 EtOAc/hexane to give title compound (2.00 g, 67%) as a colorless oil. The slightly yellow reaction was added was added The mixture was concentrated in vacuo the white powder obtained was purified by flash chromatography on silica gel (150 g) eluted with a step gradient of hexane to 2:98 EtOAc/hexane The slightly impure product obtained was rechromatographed on silica gel (150 g) eluted with 1:99 EtOAc/hexane

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To the mixture of ethyl 7-fluoro-2-(trifluoromethyl)-2H-chromene-3-carboxylate (0.29 g, 1.0 mmol) and potassium carbonate (0.21g, 1.4 mmol) was added 4-propylphenol (0.153 mL, 1.1 mmol) and 3 mL of dry DMF. The resulting mixture was heated at 110° C. for 15 hrs. LC-MS indicated that the reaction was done. To the reaction was added 15 mL of EtOAc. The resulting organic phase was washed with brine, and the volatiles were removed. To the residue was added 3 mL of THF, and a solution of lithium hydroxide hydrate (105 mg, 2.5 mmol) in 3 mL of water. Then to the resulting mixture was added 3 mL of ethanol. The resulting solution was heated at 80° C. for 5 hrs. LC-MS indicated that the reaction was completed. The volatiles were removed, the residue was diluted with water, and acidified at 0° C. with dilute HCl to pH=1.0, the product was extracted with ethyl acetate, and dried over anhydrous magnesium sulfate. After removing the volatiles, it gave a light yellow oil. The residue was purified on reverse phase HPLC. The product was obtained as a light yellow solid, 80 mg (21%). M.P.=143.5-146.5° C. 1H(CDCl3/300 Mhz) 7.80(s, 1H), 7.18-7.13(m, 3H), 6.96(d, J=8.4 Hz, 2H), 6.59-6.52(m, 2H), 5.62(q, 1H, J=6.9 Hz), 2.57(t, 2H, J=6.9 Hz,), 1.67-1.57(m, 2H), 0.93(t, J=7.2 Hz, 3H). 13C NMR(CDCl3/300 MHz)169.5, 163.6, 155.5, 153.0, 139.7(d, J=13.0 Hz), 131.4, 130.2(d, J=5.3 Hz), 123.7(q, J=287.6 Hz), 120.6, 119.8, 113.7, 112.8, 112.0, 105.0, 70.7(q, J=33.5 Hz), 73.6, 24.9, 14.1. 19F(CDCl3/300 MHz) −78.96(d, J=6.9 Hz). LC-MS(EI+) 379.1 (M+1, 100). HRMS (EI+) m/z calcd for (C20H17F3O4) 378.1079(M+), found 378.1061. The resulting organic phase was washed with brine the volatiles were removed To the residue was added 3 mL of THF The resulting solution was heated at 80° C. for 5 hrs The volatiles were removed the residue was diluted with water acidified at 0° C. with dilute HCl to pH=1.0 the product was extracted with ethyl acetate dried over anhydrous magnesium sulfate After removing the volatiles, it gave a light yellow oil The residue was purified on reverse phase HPLC The product was obtained as a light yellow solid, 80 mg (21%)