[4-(diethoxymethyl)phenyl]methanol

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Alcohol 1 (10.09 g, 48 mmol) was dissolved in a mixture of THF (100 ml) and 2 M HCl (100 ml) and stirred for 1 hour. The solvent was evaporated and the residue obtained was dissolved in ethyl acetate (100 ml) and water (100 ml). The phases were separated and the organic phase was washed with water (100 ml), dried over magnesium sulphate, and evaporated to yield 2 as a white solid (6.54 g, 48 mmol, 100%). Rf=0.54 (ethyl acetate/chloroform, 1:1); νmax=3327, 1689, 1607, 1206, 1010, 823 cm−1; 1H NMR (250 MHz, CDCl3) δ=10.02 (s, 1H, CHO), 7.89 (d, 3J(H,H)=8.1 Hz, 2H, ArCH α to CHO), 7.54 (d, 3J(H,H)=8.1 Hz, 2H, ArCH α to CH2OH), 4.82 (d, 3J(H,H)=5.9 Hz, 2H, CH2OH), 1.94 (t, 3J(H,H)=5.9 Hz, 1H, CH2OH); 13C NMR (75 MHz, CDCl3) δ=192.0 (CHO), 147.7 (ArCCOH), 135.7 (ArCCHO), 130.0 (ArCH α to ArCCHO), 127.0 (ArCH α to ArCCH2OH), 64.6 (CH2OH); HRMS (ESI−): m/z calculated for C8H7O2 [M−H]−: 135.0446, found 135.0448; elemental analysis calcd (%) for C8H8O2 (136.15): C, 70.57; H, 5.92. found: C, 70.70; H, 6.00. The solvent was evaporated the residue obtained The phases were separated the organic phase was washed with water (100 ml) dried over magnesium sulphate evaporated

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 4-(Diethoxymethyl)benzaldehyde (10 g, 48 mmol) was dissolved in methanol (200 ml) and cooled to 0° C. NaBH4 (4.54 g, 120 mmol, 2.5 eq) was then added slowly and the reaction mixture was stirred for 1 hour, after which the solvent was evaporated. The residue obtained was dissolved in ethyl acetate (100 ml) and water (100 ml), the phases were separated and the organic phase was washed with water (100 ml), dried over magnesium sulphate, and evaporated to yield 1 as a clear oil (10.09 g, 48 mmol, 100%). 1H NMR (300 MHz, CDCl3) δ=7.48 (d, 3J(H,H)=8.1 Hz, 2H, ArCH α to CH2OH), 7.37 (d, 3J(H,H)=8.1 Hz, 2H, ArCH α to CH(OEt)2), 5.51 (s, 1H, CH(OEt)2), 4.70 (d, 3J(H,H)=5.9 Hz, 2H, CH2OH), 3.61 (dq, 3J(H,H)=7.1 Hz, 2J(H,H)=9.5 Hz, 2H, CH2CH3), 3.56 (dq, 3J(H,H)=7.1 Hz, 2J(H,H)=9.5 Hz, 2H, CH2CH3), 1.75 (t, 3J(H,H)=5.9 Hz, 1H, CH2OH), 1.24 (t, 3J(H,H)=7.1 Hz, 6H, CH2CH3); 13C NMR (75 MHz, CDCl3) δ=140.9 (ArCCH2OH), 138.6 (ArCCH(OEt)2), 126.9 (ArCH α to ArCCH2OH), 126.8 (ArCH α to ArCCH(OEt)2), 101.3 (CH(OEt)2), 65.1 (CH2OH), 61.0 (OCH2CH3), 15.2 (OCH2CH3). after which the solvent was evaporated The residue obtained water (100 ml), the phases were separated the organic phase was washed with water (100 ml) dried over magnesium sulphate evaporated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of terephthalaldehyde mono(diethyl acetal) (1.9 ml, 9.6 mmol) in methanol (35 ml) was added sodium borohydride (1.1 g, 28.8 mmol) while cooling. After 5 minutes at room temperature the reaction was quenched with water (50 ml) and the mixture was extracted with ethyl acetate (2×50 ml). The combined extracts were washed with water and brine, dried over sodium sulfate and concentrated in vacuo, leaving title product as a colorless oil (1.81 g, 90%). while cooling After 5 minutes at room temperature the reaction was quenched with water (50 ml) the mixture was extracted with ethyl acetate (2×50 ml) The combined extracts were washed with water and brine dried over sodium sulfate concentrated in vacuo