2,6-二甲基庚-5-恩-2-醇

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0° C.) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65°-68° C. (461.5 g); NMR(CDCl3)δ1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0~C) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65-68~C (461.5 g); NMR(CDC13) 1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0~C) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65-68~C (461.5 g); NMR(CDC13) 1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

反应条件: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 1050 g of sulphuric acid are provided and a mixture of 1.5 l of toluene and 497 g of 2,6-dimethyl-hept-5-en-2-ol are added dropwise during 35 minutes while cooling (10° C.). The mixture is stirred at room temperature for 1.5 hours. The mixture is now diluted with hexane, poured on to ice, washed neutral, dried and evaporated. After distillation there are obtained 455 g of 1-isopropyl-4,4,7-trimethyl-1,2,3,4-tetrahydro-naphthalene (purity 75%). are added dropwise during 35 minutes poured on to ice washed neutral dried evaporated After distillation

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 42 g of acetaldehyde in 600 ml diethylether were placed in a 2 liter three-necked flask and cooled to 0° C. 140 g of a 48% solution of boron trifluoride diethyl etherate were then added and stirred for 10 minutes at 0° C. 124 g of 2,6-dimethyl-hept-5-en-2-ol dissolved in 100 ml diethyl ether were droppered into the reaction solution at 0° C. Once addition was complete stirring continued for a further hour at 0° C. followed by heating to room temperature. Once the reaction solution had been stirred for 12 hours at room temperature, quenching was carried out with saturated ammonium chloride solution (500 ml) and following conditioning of the raw product obtained distillation was performed via a 30 cm packed column. 82 g of 2,2,6-trimethyl-5-isopropenyltetrahydropyran with a purity of 98% were obtained (55% of theoretical yield). were droppered into the reaction solution at 0° C Once addition was complete stirring continued for a further hour at 0° C. by heating to room temperature Once the reaction solution had been stirred for 12 hours at room temperature quenching obtained distillation

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0~C.) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65-68~C. (461.5 g); NMR(CDCl3) 1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0° C.) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65°-68° C. (461.5 g); NMR(CDCl3)δ1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0° C.) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65°-68° C. (461.5 g); NMR(CDCl3)δ1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) added to the cold (0~C.) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65-68~C. (461.5 g); NMR(CDCl3) 1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours

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

实验步骤: To sodium hydride (93.5 g, 3.9 mol) suspended in tetrahydrofuran (300 mL) was added 2,6-dimethylhept-5-en-2-ol (500 g, 3.5 mol) in tetrahydrofuran (1000 mL). The mixture was heated at reflux until gas evolution was complete. Dimethylsulfate (274 mL, 2.9 mol) in tetrahydrofuran (226 mL) was added to the cold (0~C) mixture. After standing for 16 h, the mixture was heated at reflux for 7 hours. Aqueous workup yielded 2,6-dimethyl-2-methoxyhept-5-ene, bp40 65-68~C (461.5 g); NMR(CDC13) 1.2(s,6H), 1.4-1.6(m,2H), 1.6(s,3H), 1.7(s,3H), 1.9-2.1(m,2H), 3.2(s,3H), 5.1-5.2(m,1H); IR(neat) 2970, 2932, 1462, 1442, 1373, 1357, 1195, 1072 cm-1 ; MS(m/e) 41, 67, 73, 109, 124, 142. The mixture was heated at reflux until gas evolution the mixture was heated at reflux for 7 hours