N-(1-hydroxy-2-methylpropan-2-yl)benzamide

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 40 ml of freshly distilled thionyl chloride at 0° was added in portions over 15 minutes was stirring 3.86 g (0.02 mol) 2-benzoylamino-2-methyl-1-propanol. The solution was warmed to room temperature and heated under reflux for 2 hours. The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° following the addition of anhydrous ether. The solid was triturated in anhydrous ether overnight and isolated by filtration under a nitrogen atmosphere. After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%, 2-phenyl-4,4-dimethyl-1,3-oxazoline hydrochloride was obtained as a white solid, mp 149°-151°; ir (KBr) 1640 (c=N) cm-1, pmr (D2O) δ 1.60 (s, 6H), 4.70 (s, 2H) and 7.3-8.2 (m, 5H) ppm. heated under reflux for 2 hours The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° the addition of anhydrous ether The solid was triturated in anhydrous ether overnight isolated by filtration under a nitrogen atmosphere After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%

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

実験手順: To a 250 ml dichloromethane solution containing 89 g (1.0 mol) 2-amino-2-methyl-1-propanol at 0° was added dropwise with stirring 70 g (0.5 mol) benzoyl chloride in 250 ml dichloromethane. The reaction mixture was warmed to room temperature and stirred for several hours. The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration and was thoroughly washed with dichloromethane. The filtrate and washings were combined and the dichloromethane removed under reduced pressure to afford 67.55 g (0.35 mol), 70%, 2-benzoylamino-2-methyl-1-propanol as a white solid, mp 80°-82°, sublimation at 75° (0.2 mm); ir (KBr) 1630 (c=o) cm-1 ; pmr (CDCl3) δ 1.50 (s, 6H), 3.67 (s, 2H), 5.27 (bs, 1H), 6.92 (bs, 1H) and 7.1-8.3 (m, 5H) ppm. was added dropwise The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration was thoroughly washed with dichloromethane the dichloromethane removed under reduced pressure

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

実験手順: To 40 ml of freshly distilled thionyl chloride at 0° was added in portions over 15 minutes with stirring 3.86 g (0.02 mol) 2-benzoylamino-2-methyl-1-propanol. The solution was warmed to room temperature and heated under reflux for 2 hours. The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° following the addition of anhydrous ether. The solid was triturated in anhydrous ether overnight and isolated by filtration under a nitrogen atmosphere. After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%, 2-phenyl-4,4-dimethyl-1,3-oxazoline hydrochloride was obtained as a white solid, mp 149°-151°; ir (KBr) 1640 (c=N) cm-1, pmr (D2O) δ 1.60 (s, 6H), 4.70 (s, 2H) and 7.3-8.2 (m, 5H) ppm. heated under reflux for 2 hours The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° the addition of anhydrous ether The solid was triturated in anhydrous ether overnight isolated by filtration under a nitrogen atmosphere After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%

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

実験手順: To a 250 ml dichloromethane solution containing 89 g (1.0 mol) 2-amino-2-methyl-1-propanol at 0° was added dropwise with stirring 70 g (0.5 mol) benzoyl chloride in 250 ml dichloromethane. The reaction mixture was warmed to room temperature and stirred for several hours. The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration and was thoroughly washed with dichloromethane. The filtrate and washings were combined and the dichloromethane removed under reduced pressure to afford 67.55 g (0.35 mol), 70%, 2-benzoylamino-2-methyl-1-propanol as a white solid, mp 80°-82°, sublimation at 75° (0.2 mm); ir (KBr) 1630 (c=o) cm-1 ; pmr (CDCl3) δ 1.50 (s, 6H), 3.67 (s, 2H), 5.27 (bs, 1H), 6.92 (bs, 1H) and 7.1 - 8.3 (m, 5H) ppm. was added dropwise The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration was thoroughly washed with dichloromethane the dichloromethane removed under reduced pressure

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

実験手順: To a 250 ml dichloromethane solution containing 89 g (1.0 mol) 2-amino-2-methyl-1-propanol at 0° was added dropwise with stirring 70 g (0.5 mol) benzoyl chloride in 250 ml dichloromethane. The reaction mixture was warmed to roome temperature and stirred for several hours. The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration and was thoroughly washed with dichloromethane. The filtrate and washings were combined and the dichloromethane removed under reduced pressure to afford 67.55 g (0.35 mol), 70%, 2-benzoylamino-2-methyl-1-propanol as a white solid, mp 80°-82°, sublimation at 75° (0.2 mm); ir (KBr) 1630 (c=o) cm-1 ; pmr (CDCl3) δ 1.50 (s, 6H), 3.67 (s, 2H), 5.27 (bs, 1H), 6.92 (bs, 1H) and 7.1 - 8.3 (m, 5H) ppm. was added dropwise The reaction mixture was warmed The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration was thoroughly washed with dichloromethane the dichloromethane removed under reduced pressure

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

実験手順: To a 250 ml dichloromethane solution containing 89 g (1.0 mol) 2-amino-2-methyl-1-propanol at 0° was added dropwise with stirring 70 g (0.5 mol) benzoyl chloride in 250 ml dichloromethane. The reaction mixture was warmed to roome temperature and stirred for several hours. The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration and was thoroughly washed with dichloromethane. The filtrate and washings were combined and the dichloromethane removed under reduced pressure to afford 67.55 g (0.35 mol), 70%, 2-benzoylamino-2-methyl-1-propanol as a white solid, mp 80°-82°, sublimation at 75° (0.2 mm); ir (KBr) 1630 (c=o) cm-1 ; pmr (CDCl3) δ 1.50 (s, 6H), 3.67 (s, 2H), 5.27 (bs, 1H), 6.92 (bs, 1H) and 7.1 - 8.3 (m, 5H) ppm. was added dropwise The reaction mixture was warmed The 2-amino-2-methyl-1-propanol hydrochloride was removed from the reaction mixture by filtration was thoroughly washed with dichloromethane the dichloromethane removed under reduced pressure

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

実験手順: Prepared as in Example 215c from N-(1-hydroxy-2-methylpropan-2-yl)benzamide (Boyd, R. N.; Hansen, R. H. J. Am. Chem. Soc. 1953, 75, 5896) and 2,6-dinitrobenzonitrile in 91% yield as a pale yellow solid. MS 340 (MH+).

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

実験手順: Prepared as in Example 215c from N-(1-hydroxy-2-methylpropan-2-yl)benzamide (Boyd, R. N.; Hansen, R. H. J. Am. Chem. Soc. 1953, 75, 5896) and 2,6-dinitrobenzonitrile in 91% yield as a pale yellow solid. MS 340 (MH+).

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

実験手順: Prepared as in Example 215c from N-(1-hydroxy-2-methylpropan-2-yl)benzamide (Boyd, R. N.; Hansen, R. H. J. Am. Chem. Soc. 1953, 75, 5896) and 2,6-dinitrobenzonitrile in 91% yield as a pale yellow solid. MS 340 (MH+).

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

実験手順: To 40 ml of freshly distilled thionyl chloride at 0° was added in portions over 15 minutes was stirring 3.86 g (0.02 mol) 2-benzoylamino-2-methyl-1-propanol. The solution was warmed to room temperature and heated under reflux for 2 hours. The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° following the addition of anhydrous ether. The solid was triturated in anhydrous ether overnight and isolated by filtration under a nitrogen atmosphere. After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%, 2-phenyl-4,4-dimethyl-1,3-oxazoline hydrochloride was obtained as a white solid, mp 149°-151°; ir (KBr) 1640 (c=N) cm-1, pmr (D2O) δ 1.60 (s, 6H), 4.70 (s, 2H) and 7.3-8.2 (m, 5H) ppm. heated under reflux for 2 hours The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° the addition of anhydrous ether The solid was triturated in anhydrous ether overnight isolated by filtration under a nitrogen atmosphere After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%

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

実験手順: To 40 ml of freshly distilled thionyl chloride at 0° was added in portions over 15 minutes was stirring 3.86 g (0.02 mol) 2-benzoylamino-2-methyl-1-propanol. The solution was warmed to room temperature and heated under reflux for 2 hours. The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° following the addition of anhydrous ether. The solid was triturated in anhydrous ether overnight and isolated by filtration under a nitrogen atmosphere. After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%, 2-phenyl-4,4-dimethyl-1,3-oxazoline hydrochloride was obtained as a white solid, mp 149°-151°; ir (KBr) 1640 (c=N) cm-1, pmr (D2O) δ 1.60 (s, 6H), 4.70 (s, 2H) and 7.3-8.2 (m, 5H) ppm. heated under reflux for 2 hours The thionyl chloride was removed under reduced pressure to afford a yellow oil which crystallized at 0° the addition of anhydrous ether The solid was triturated in anhydrous ether overnight isolated by filtration under a nitrogen atmosphere After drying in vacuo over calcium sulfate, 2.00 g (0.009 mol), 45%