تفاعل #364338

معادلة التفاعل

2-benzyl-6-methyl-4-pyranone

hydroxylamine hydrochloride

sodium acetate

→

amine

2-BENZYL-6-METHYL-4-PYRANYLAMINE

المذيبات

methanol

ظروف التفاعل

المعالجة

1. 1
   أخرىthe mixture was partitioned between CH2Cl2 and water
2. 2
   أخرىThe organic phase was dried
3. 3
   أخرىevaporated
4. 4
   أخرىupon standing at room temperature

الإجراء التجريبي

This amine was prepared according to Scheme 32. To 0.37 g (1.8 mmol) of 2-benzyl-6-methyl-4-pyranone (G. Piancatilli, et. al., Synthesis, 1982, 248) was added 0.22 g (3.1 mmol) of hydroxylamine hydrochloride and 0.16 g (2 mmol) of sodium acetate in 10 mL of methanol. After stirring overnight, the mixture was partitioned between CH2Cl2 and water. The organic phase was dried and evaporated. The oily residue solidified upon standing at room temperature to give 0.4 g (99%) of the desired oxime 121 as a Z/E isomer mixture 1:1 by GC/MS with a molecular ion of 219, and that was used as is in the reduction reaction below.

المصدر