1-iodo-4-(methoxymethoxy)benzene

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: Paraiodophenol (25 g) was dissolved in DMF (100 ml), followed by the addition of potassium t-butoxide (25 g) and methoxymethyl chloride (13 ml), and the mixture was reacted at 60° C. overnight. The reaction solution was poured into water and extracted with ethyl acetate. The organic layer was washed with water and brine, dried and evaporated. The resulting residue was subjected to a silica gel short column, to give 4-methoxymethoxy-1-iodobenzene as an oil (26.5 g, yield; 88%). the mixture was reacted at 60° C. overnight extracted with ethyl acetate The organic layer was washed with water and brine dried evaporated

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

Procedure: A mixture of Ethyl 2-pentynoate (350 mg, 2.77 mmol), 1-iodo-4-(methoxymethoxy)benzene (1.46 g, 5.53 mmol), 2-Methylphenylboronic acid (753 mg, 5.53 mmol) and K2CO3 (766 mg, 5.54 mmol) in DMF (8.5 ml)-H2O (2.2 ml) was stirred at room temperature for 10 min. Then PdCl2(PhCN)2 (10.6 mg, 0.0276 mmol) was added under Ar atmosphere, and the mixture was stirred at room temperature for 24 h. The reaction was quenched with H2O under ice cooling, and the whole was extracted with Et2O. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1) gave 2a (27%). 2a: colorless oil; 1H-NMR (CDCl3) δ 1.02 (3H, t, J=7.5 Hz), 1.33 (3H, t, J=7.1 Hz), 2.04 (3H, s), 2.56 (2H, m), 3.42 (3H, s), 4.30 (2H, m), 5.06 (2H, s), 6.72 (2H, d, J=8.8 Hz), 6.88 (2H, d, J=8.8 Hz), 7.00-7.12 (5H, m). the mixture was stirred at room temperature for 24 h The reaction was quenched with H2O under ice cooling the whole was extracted with Et2O The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1)

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

Procedure: To a mixture of 2 (385 mg, 2.79 mmol), 1-iodo-4-(methoxymethoxy)benzene (1.47 g, 5.57 mmol), Phenylboronic acid (680 mg, 5.58 mmol) and K2CO3 (771 mg, 5.58 mmol) in DMF (8.5 ml)-H2O (2.2 ml) was stirred at room temperature for 10 min. Then PdCl2(PhCN)2 (10.7 mg, 0.0279 mmol) was added under Ar atmosphere, and the mixture was stirred at room temperature for 24 h. The reaction was quenched with H2O under ice cooling, and the whole was extracted with Et2O. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1) gave 5 (29%). 5: colorless oil; 1H-NMR (CDCl3) δ 0.44 (2H, m), 0.79 (2H, m), 1.29 (3H, t, J=7.2 Hz), 2.30 (1H, m), 3.43 (3H, s), 4.28 (2H, q, J=7.1 Hz), 5.08 (2H, s), 6.78 (2H, d, J=8.8 Hz), 6.85 (2H, d, J=8.8 Hz), 6.99 (2H, m), 7.03-7.09 (3H, m). the mixture was stirred at room temperature for 24 h The reaction was quenched with H2O under ice cooling the whole was extracted with Et2O The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1)

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

Procedure: To a mixture of 2 (385 mg, 2.79 mmol), 1-iodo-4-(methoxymethoxy)benzene (1.47 g, 5.57 mmol), Phenylboronic acid (680 mg, 5.58 mmol) and K2CO3 (771 mg, 5.58 mmol) in DMF (8.5 ml)-H2O (2.2 ml) was stirred at room temperature for 10 min. Then PdCl2(PhCN)2 (10.7 mg, 0.0279 mmol) was added under Ar atmosphere, and the mixture was stirred at room temperature for 24 h. The reaction was quenched with H2O under ice cooling, and the whole was extracted with Et2O. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1) gave 5 (29%). 5: colorless oil; 1H-NMR (CDCl3) δ 0.44 (2H, m), 0.79 (2H, m), 1.29 (3H, t, J=7.2 Hz), 2.30 (1H, m), 3.43 (3H, s), 4.28 (2H, q, J=7.1 Hz), 5.08 (2H, s), 6.78 (2H, d, J=8.8 Hz), 6.85 (2H, d, J=8.8 Hz), 6.99 (2H, m), 7.03-7.09 (3H, m). the mixture was stirred at room temperature for 24 h The reaction was quenched with H2O under ice cooling the whole was extracted with Et2O The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1)

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

Procedure: Under an Ar atmosphere, a mixture of 1-iodo-4-(methoxymethoxy)benzene (500 mg, 1.89 mmol), Ethyl propiolate (371 mg, 3.78 mmol) and Copper(I) oxide (270 mg, 1.89 mmol) in DMF (10 ml) was heated at 110° C. for 16 h. After cooling, H2O was poured into the reaction mixture under ice cooling, and the whole was extracted with AcOEt. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 15:1) gave 2e (52%). 2e: colorless oil; 1H-NMR (CDCl3) δ 1.36 (3H, t, J=7.1), 3.48 (3H, 2), 4.29 (2H, q, J=7.1), 5.20 (2H, s), 7.02 (2H, d, J=8.8 Hz), 7.54 (2H, d, J=8.8 Hz). After cooling the whole was extracted with AcOEt The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 15:1)

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

Procedure: Under an Ar atmosphere, a mixture of 1-iodo-4-(methoxymethoxy)benzene (500 mg, 1.89 mmol), Ethyl propiolate (371 mg, 3.78 mmol) and Copper(I) oxide (270 mg, 1.89 mmol) in DMF (10 ml) was heated at 110° C. for 16 h. After cooling, H2O was poured into the reaction mixture under ice cooling, and the whole was extracted with AcOEt. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 15:1) gave 2e (52%). 2e: colorless oil; 1H-NMR (CDCl3) δ 1.36 (3H, t, J=7.1), 3.48 (3H, 2), 4.29 (2H, q, J=7.1), 5.20 (2H, s), 7.02 (2H, d, J=8.8 Hz), 7.54 (2H, d, J=8.8 Hz). After cooling the whole was extracted with AcOEt The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 15:1)

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

Procedure: To a mixture of Ethyl 2-pentynoate (5.5 g, 43.6 mmol), 1-iodo-4-(methoxymethoxy)benzene (23.0 g, 87.1 mmol), Phenylboronic acid (10.6 g, 86.9 mmol) in DMF (132 ml) was added a solution of K2CO3 (12.1 g, 87.5 mmol) in H2O (33 ml) under ice cooling, then the mixture was stirred at room temperature for 10 min. PdCl2(PhCN)2 (167 mg, 0.435 mmol) was added under Ar atmosphere, and the mixture was stirred at room temperature for 24 h. The reaction was quenched with H2O under ice cooling, and the whole was extracted with Et2O. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1) gave 2 (29%) and the regioisomer (24%). 2: colorless oil; 1H-NMR (CDCl3) δ 1.00 (3H, t, J=7.4), 1.31 (3H, t, J=7.1 Hz), 2.63 (2H, q, J=7.4 Hz), 3.42 (3H, s), 4.28 (2H, q, J=7.1 Hz), 5.07 (2H, s), 6.75 (2H, d, J=8.8 Hz), 6.90 (2H, d, J=8.8 Hz), 7.04 (2H, m), 7.12-7.21 (3H, m); regioisomer: H1-NMR (CDCl3) δ 1.02 (3H, t, J=7.4 Hz), 1.29 (3H, t, J=7.1 Hz), 2.64 (2H, q, J=7.4 Hz), 3.45 (3H, s), 4.27 (2H, q, J=7.1 Hz), 5.10 (2H, s), 6.81 (2H, d, J=8.8 Hz), 6.95 (2H, d, J=8.8 Hz), 7.00 (2H, m), 7.06-7.14 (3H, m). the mixture was stirred at room temperature for 24 h The reaction was quenched with H2O under ice cooling the whole was extracted with Et2O The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1)

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

Procedure: To a mixture of Ethyl 2-pentynoate (5.5 g, 43.6 mmol), 1-iodo-4-(methoxymethoxy)benzene (23.0 g, 87.1 mmol), Phenylboronic acid (10.6 g, 86.9 mmol) in DMF (132 ml) was added a solution of K2CO3 (12.1 g, 87.5 mmol) in H2O (33 ml) under ice cooling, then the mixture was stirred at room temperature for 10 min. PdCl2(PhCN)2 (167 mg, 0.435 mmol) was added under Ar atmosphere, and the mixture was stirred at room temperature for 24 h. The reaction was quenched with H2O under ice cooling, and the whole was extracted with Et2O. The organic layer was washed with H2O, brine, dried over Na2SO4, then concentrated. Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1) gave 2 (29%) and the regioisomer (24%). 2: colorless oil; 1H-NMR (CDCl3) δ 1.00 (3H, t, J=7.4), 1.31 (3H, t, J=7.1 Hz), 2.63 (2H, q, J=7.4 Hz), 3.42 (3H, s), 4.28 (2H, q, J=7.1 Hz), 5.07 (2H, s), 6.75 (2H, d, J=8.8 Hz), 6.90 (2H, d, J=8.8 Hz), 7.04 (2H, m), 7.12-7.21 (3H, m); regioisomer: H1-NMR (CDCl3) δ 1.02 (3H, t, J=7.4 Hz), 1.29 (3H, t, J=7.1 Hz), 2.64 (2H, q, J=7.4 Hz), 3.45 (3H, s), 4.27 (2H, q, J=7.1 Hz), 5.10 (2H, s), 6.81 (2H, d, J=8.8 Hz), 6.95 (2H, d, J=8.8 Hz), 7.00 (2H, m), 7.06-7.14 (3H, m). the mixture was stirred at room temperature for 24 h The reaction was quenched with H2O under ice cooling the whole was extracted with Et2O The organic layer was washed with H2O, brine dried over Na2SO4 concentrated Purification by silica gel flash column chromatography (eluent: hexane/AcOEt, 30:1 to 10:1)

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