phenyl 3-methylbut-2-enoate

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: To a stirred, ice-cooled suspension of 10.4 g (78 mmol) of aluminum chloride in 160 ml of methylene chloride was added slowly under argon a solution of 7 g (39.8 mmol) of phenyl 3,3-dimethylacrylate (Compound 37) in 40 ml of methylene chloride. The cooling bath was removed and the mixture stirred for a further 42 h. The mixture was poured into a mixture of ice and brine and the organic layer separated. The aqueous layer was extracted with methylene chloride and the organic extracts were combined and washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 10% ether in hexane) to give the title compound as a colorless oil. PMR (CDCl3 : & 1.30 (6H, s), 2.56 (2H, s), 7.06 (1H, dd, J~8.0 Hz, 1.4 Hz), 7.16 (1H, td, J~8.0 Hz, 1.4 Hz), 7.26 (1H, td, J~8.0 Hz, 1.7 Hz), 733. (1H, dd, J~8.0 Hz, 1.7 Hz). MS exact mass, m/e 176.0852 (calcd. for C11Hl2O2, 176.0837. To a stirred, ice-cooled The cooling bath was removed The mixture was poured into a mixture of ice and brine the organic layer separated The aqueous layer was extracted with methylene chloride washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 10% ether in hexane)

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

実験手順: To an ice bath cooled solution of 1.29 g (54 mmol) of NaH (obtained from a 60% suspension in mineral oil by 3×10 ml hexane wash) in 20 ml of dry THF was added slowly under oxygen a solution of 5 g (53 mmol) of phenol in 50 ml of dry THF. The mixture was then treated with a solution of 7 g (59 mmol) of dimethylacryloyl chloride in 30 ml of dry THF. The cooling bath was then removed and the mixture was stirred for a further 2.5 h. The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid. The mixture was extracted with 150 ml ether and the ether extract washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 5% ether in hexanes) to give the title compound as a yellow oil. PMR (CDCl3)): & 1.99 (3H, s), 2.24 (3H, s), 5.93 (1H, broad s), 7.10 (2H, d, J~7.8 Hz) 7.22 (1H, t, J~7.8 Hz), 7.38 (2H, t, J~7.8 Hz). wash) in 20 ml of dry THF The cooling bath was then removed The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid The mixture was extracted with 150 ml ether the ether extract washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 5% ether in hexanes)

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

実験手順: To a stirred, ice-cooled suspension of 10.4 g (78 mmol) of aluminum chloride in 160 ml of methylene chloride was added slowly under argon a solution of 7 g (39.8 mmol) of phenyl 3,3-dimethylacrylate (Compound 83) in 40 ml of methylene chloride. The cooling bath was removed and the mixture stirred for a further 42 h. The mixture was poured into a mixture of ice and brine and the organic layer separated. The aqueous layer was extracted with methylene chloride and the organic extracts were combined and washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 10% ether in hexane) to give the title compound as a colorless oil. PMR (CDCl3 : & 1.30 (6H, s), 2.56 (2H, s), 7.06 (1H, dd, J~8.0 Hz, 1.4 Hz), 7.16 (1H, td, J~8.0 Hz, 1.4 Hz), 7.26 (1H, td, J~8.0 Hz, 1.7 Hz), 7.33 (1H, dd, J~8.0 Hz, 1.7 Hz). MS exact mass, m/e 176.0852 (calcd. for C11H12O2, 176.0837. To a stirred, ice-cooled The cooling bath was removed The mixture was poured into a mixture of ice and brine the organic layer separated The aqueous layer was extracted with methylene chloride washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 10% ether in hexane)

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

実験手順: To an ice bath cooled solution of 1.29 g (54 mmol) of NaH (obtained from a 60% suspension in mineral oil by 3×10 ml hexane wash) in 20 ml of dry THF was added slowly under oxygen a solution of 5 g (53 mmol) of phenol in 50 ml of dry THF. The mixture was then treated with a solution of 7 g (59 mmol) of dimethylacryloyl chloride in 30 ml of dry THF. The cooling bath was then removed and the mixture was stirred for a further 2.5 h. The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid. The mixture was extracted with 150 ml ether and the ether extract washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 5% ether in hexanes) to give the title compound as a yellow oil. PMR (CDCl3)): & 1.99 (3H, s), 2.24 (3H, s), 5.93 (1H, broad s), 7.10 (2H, d, J~7.8 Hz) 7.22 (1t, J~7.8 Hz), 7.38 (2H, t, J~7.8 Hz). wash) in 20 ml of dry THF The cooling bath was then removed The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid The mixture was extracted with 150 ml ether the ether extract washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 5% ether in hexanes)

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

実験手順: To a stirred, ice-cooled suspension of 10.4 g (78 mmol) of aluminum chloride in 160 ml of methylene chloride was added slowly under argon a solution of 7 g (39.8 mmol) of phenyl 3,3-dimethylacrylate (Compound 37) in 40 ml of methylene chloride. The cooling bath was removed and the mixture stirred for a further 42 h. The mixture was poured into a mixture of ice and brine and the organic layer separated. The aqueous layer was extracted with methylene chloride and the organic extracts were combined and washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 10% ether in hexane) to give the title compound as a colorless oil. PMR (CDCl3 : & 1.30 (6H, s), 2.56 (2H, s), 7.06 (1H, dd, J~8.0 Hz 1.4 Hz) 7.16 (1H, td, J~8.0 Hz, 1.4 Hz), 7.26 (1H, td, J~8.0 Hz, 1.7 Hz), 7.33 (1H, dd, J~8.0 Hz, 1.7 Hz). MS exact mass, m/e 176.0852 (calcd. for C11H12O2, 176.0837. To a stirred, ice-cooled The cooling bath was removed The mixture was poured into a mixture of ice and brine the organic layer separated The aqueous layer was extracted with methylene chloride washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 10% ether in hexane)

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

実験手順: To an ice bath cooled solution of 1.29 g (54 mmol) of NaH (obtained from a 60% suspension in mineral oil by 3×10 ml hexane wash) in 20 ml of dry THF was added slowly under oxygen a solution of 5 g (53 mmol) of phenol in 50 ml of dry THF. The mixture was then treated with a solution of 7 g (59 mmol) of dimethylacryloyl chloride in 30 ml of dry THF. The cooling bath was then removed and the mixture was stirred for a further 2.5 h. The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid. The mixture was extracted with 150 ml ether and the ether extract washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 5% ether in hexanes) to give the title compound as a yellow oil. PMR (CDCl3)): & 1.99 (3H, s), 2.24 (3H, s), 5.93 (1H, broad s), 7.10 (2H, d, J~7.8 Hz) 7.22 (1H, t, J~7.8 Hz), 7.38 (2H, t, J~7.8 Hz). wash) in 20 ml of dry THF The cooling bath was then removed The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid The mixture was extracted with 150 ml ether the ether extract washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 5% ether in hexanes)

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

実験手順: To a stirred, ice-cooled suspension of 10.4 g (78 mmol) of aluminum chloride in 160 ml of methylene chloride was added slowly under argon a solution of 7 g (39.8 mmol) of phenyl 3,3-dimethylacrylate (Compound 42) in 40 ml of methylene chloride. The cooling bath was removed and the mixture stirred for a further 42 h. The mixture was poured into a mixture of ice and brine and the organic layer separated. The aqueous layer was extracted with methylene chloride and the organic extracts were combined and washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 10% ether in hexane) to give the title compound as a colorless oil. PMR (CDCl3 & 1.30 To a stirred, ice-cooled The cooling bath was removed The mixture was poured into a mixture of ice and brine the organic layer separated The aqueous layer was extracted with methylene chloride washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 10% ether in hexane)

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

実験手順: To an ice bath cooled solution of 1.29 g (54 mmol) of NaH (obtained from a 60% suspension in mineral oil by 3×10 ml hexane wash) in 20 ml of dry THF was added slowly under oxygen a solution of 5 g (53 mmol) of phenol in 50 ml of dry THF. The mixture was then treated with a solution of 7 g (59 mmol) of dimethylacryloyl chloride in 30 ml of dry THF. The cooling bath was then removed and the mixture was stirred for a further 2.5 h. The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid. The mixture was extracted with 150 ml ether and the ether extract washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 5% ether in hexanes) to give the title compound as a yellow oil. PMR (CDCl3)): & 1.99 (3H, s), 2.24 (3H, s), 5.93 (1H, broad s), 7.10 (2H, d, J~7.8 Hz) 7.22 (1H, t, J~7.8 Hz), 7.38 (2H, t, J~7.8 Hz). wash) in 20 ml of dry THF The cooling bath was then removed The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid The mixture was extracted with 150 ml ether the ether extract washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 5% ether in hexanes)

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

実験手順: To an ice bath cooled solution of 1.29 g (54 mmol) of NaH (obtained from a 60% suspension in mineral oil by 3×10 ml hexane wash) in 20 ml of dry THF was added slowly under oxygen a solution of 5 g (53 mmol) of phenol in 50 ml of dry THF. The mixture was then treated with a solution of 7 g (59 mmol) of dimethylacryloyl chloride in 30 ml of dry THF. The cooling bath was then removed and the mixture was stirred for a further 2.5 h. The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid. The mixture was extracted with 150 ml ether and the ether extract washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 5% ether in hexanes) to give the title compound as a yellow oil. PMR (CDCl3)): & 1.99 (3H, s), 2.24 (3H, s), 5.93 (1H, broad s), 7.10 (2H, d, J~7.8 Hz) 7.22 (1H, t, J~7.8 Hz), 7.38 (2H, t, J~7.8 Hz). wash) in 20 ml of dry THF The cooling bath was then removed The reaction mixture was then poured into 150 ml of water containing 1 ml of glacial acetic acid The mixture was extracted with 150 ml ether the ether extract washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 5% ether in hexanes)

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

実験手順: To a stirred, ice-cooled suspension of 10.4 g (78 mmol) of aluminum chloride in 160 ml of methylene chloride was added slowly under argon a solution of 7 g (39.8 mmol) of phenyl 3,3-dimethylacrylate (Compound 81) in 40 ml of methylene chloride. The cooling bath was removed and the mixture stirred for a further 42 h. The mixture was poured into a mixture of ice and brine and the organic layer separated. The aqueous layer was extracted with methylene chloride and the organic extracts were combined and washed with saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 10% ether in hexane) to give the title compound as a colorless oil. PMR (CDCl3 : & 1.30 (6H, s), 2.56 (2H, s), 7.06 (1H, dd, J~8.0 Hz, 1.4 Hz), 7.16 (1H, td, J~8.0 Hz, 1.4 Hz), 7.26 (1H, td, J~8.0 Hz, 1.7 Hz), 7.33 (1H, dd, J~8.0 Hz, 1.7 Hz). MS exact mass, m/e 176.0852 (calcd. for C11H12O2, 176.0837. To a stirred, ice-cooled The cooling bath was removed The mixture was poured into a mixture of ice and brine the organic layer separated The aqueous layer was extracted with methylene chloride washed with saturated NaCl solution dried (MgSO4) The solvent was removed in vacuo the residue purified by flash chromatography (silica; 10% ether in hexane)