2-(5-hexyn-1-yloxy)tetrahydro-2H-Pyran

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 2.27 g (5 mmol) of (E)-5-[3-[[(trifluoromethyl)sulfonyl]oxy]-2-(3-methoxy-3-oxo-1-propenyl)phenoxy]pentanoic acid methyl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 0.075 g of cuprous iodide, 7.5 mL of dry triethylamine, and 35 mL of dry N,N-dimethylforamide was stirred and heated at 100° C. for 3.5 hr. An additional 0.25 g of the acetylene was added and heating was continued for 24 hr at which point 0.75 g of the acetylene was added and heating was continued for 6 hr. The resulting mixture was cooled, poured into water and worked-up with ethyl acetate in the usual manner. The crude, oily product was chromatographed on silica gel. Elution with 10:1 toluene-ethyl acetate afforded 0.9 g (38%) of rac-(E)-5-[2-(3-methoxy-3-oxo-1-propenyl)-3-[ 6-[(tetrahydro-2H-pyran-2-yl)oxy]-1hexynyl]phenoxy]pentanoic acid methyl ester as a yellow oil. heating was added heating was continued for 6 hr The resulting mixture was cooled The crude, oily product was chromatographed on silica gel Elution with 10:1 toluene-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: n-Butyllithium (8.4 ml. of a 1.55 molar solution in hexane) was added to a solution of 6-tetrahydropyranyloxyhex-1-yne (2.25 g.) in tetrahydrofuran (25 ml.) at 10° C., the mixture was allowed to warm up to laboratory temperature and was stirred at that temperature for 30 minutes, and was then recooled to 10° C. A solution of 3,4-dihydro-6-methoxy-2-p-methoxyphenyl-2-methylnaphthalen-1(2H)-one (2.0 g.) in tetrahydrofuran (20 ml.) was added dropwise and the mixture was allowed to warm up to laboratory temperature and stirred at that temperature for 30 minutes. Saturated aqueous ammonium chloride solution (50 ml.) was added and the mixture was extracted with ethyl acetate. The extract was dried and evaporated to dryness and the residue was purified by chromatography on a silica gel column using a 3:1 v/v mixture of petroleum ether (b.p. 60°-80° C.) and ethyl acetate as eluant. The product was crystallised from ethanol and there was thus obtained, as a mixture of isomers, 6-methoxy-2-p-methoxyphenyl-2-methyl-1-(6-tetrahydropyranyloxyhex-1-ynyl)-1,2,3,4-tetrahydronaphth-1-ol, m.p. 80°-82° C. to warm up to laboratory temperature was then recooled to 10° C to warm up to laboratory temperature stirred at that temperature for 30 minutes the mixture was extracted with ethyl acetate The extract was dried evaporated to dryness the residue was purified by chromatography on a silica gel column a 3:1 v/v mixture of petroleum ether (b.p. 60°-80° C.) and ethyl acetate as eluant The product was crystallised from ethanol and there

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 2.27 g (5 mmol) of (E)-5-[3-[[(trifluoromethyl)sulfonyl]oxy]-2-(3-methoxy-3-oxo-1-propenyl)phenoxy]pentanoic acid methyl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 0.075 g of cuprous iodide, 7.5 mL of dry triethylamine, and 35 mL of dry N,N-dimethylforamide was stirred and heated at 100° C. for 3.5 hr. An additional 0.25 g of the acetylene was added and heating was continued for 24 hr at which point 0.75 g of the acetylene was added and heating was continued for 6 hr. The resulting mixture was cooled, poured into water and worked-up with ethyl acetate in the usual manner. The crude, oily product was chromatographed on silica gel. Elution with 10:1 toluene-ethyl acetate afforded 0.9 g (38%) of rac-(E)-5-[2-(3-methoxy-3-oxo-1-propenyl)-3-[ 6-[(tetrahydro-2H-pyran-2-yl)oxy]-1hexynyl]phenoxy]pentanoic acid methyl ester as a yellow oil. heating was added heating was continued for 6 hr The resulting mixture was cooled The crude, oily product was chromatographed on silica gel Elution with 10:1 toluene-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 2.27 g (5 mmol) of (E)-5-[3-[[(trifluoromethyl)sulfonyl]oxy]-2-(3-methoxy-3-oxo-1-propenyl)phenoxy]pentanoic acid methyl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 0.075 g of cuprous iodide, 7.5 mL of dry triethylamine, and 35 mL of dry N,N-dimethylforamide was stirred and heated at 100° C. for 3.5 hr. An additional 0.25 g of the acetylene was added and heating was continued for 24 hr at which point 0.75 g of the acetylene was added and heating was continued for 6 hr. The resulting mixture was cooled, poured into water and worked-up with ethyl acetate in the usual manner. The crude, oily product was chromatographed on silica gel. Elution with 10:1 toluene-ethyl acetate afforded 0.9 g (38%) of rac-(E)-5-[2-(3-methoxy-3-oxo-1-propenyl)-3-[ 6-[(tetrahydro-2H-pyran-2-yl)oxy]-1hexynyl]phenoxy]pentanoic acid methyl ester as a yellow oil. heating was added heating was continued for 6 hr The resulting mixture was cooled The crude, oily product was chromatographed on silica gel Elution with 10:1 toluene-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester, 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichlorobis(triphenylphosphine)palladium (II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester (preceding example), 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichloro-bis(triphenylphosphine)palladium(II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester (preceding example), 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichloro-bis(triphenylphosphine)palladium(II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 1.47 g (5 mmol) of trifluoromethanesulfonic acid 2-oxo-2H-1-benzopyran-5-yl ester (preceding example), 1.0 g (5.5 mmol) of rac-6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexyne, 75 mg of cuprous iodide, 0.3 g (0.428 mmol) of dichloro-bis(triphenylphosphine)palladium(II), 7.5 mL of triethylamine, and 35 mL of dry N,N-dimethylformamide was stirred and heated at 100° C. for 24 hr. The reaction mixture was cooled, poured into water, and worked-up with ether in the usual manner. The dark-brown, oily residue was flash chromatographed on silica gel. Elution with 2:1 hexane-ethyl acetate gave 1.09 g (67%) of rac-5-[6-[(tetrahydro-2H-pyran-2-yl)oxy]-1-hexynyl]-2H-1-benzopyran-2-one as an orange oil. The reaction mixture was cooled chromatographed on silica gel Elution with 2:1 hexane-ethyl acetate