2,3,4,5-Tetrahydro-1-benzoxepin-5-one → 3,4-dihydro-1-benzoxepin-5(2H)-one oxime
反応式
[O:1]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[C:5](=O)[CH2:4][CH2:3][CH2:2]1.Cl.[NH2:14][OH:15]>C(O)C.N1C=CC=CC=1>[O:1]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[C:5](=[N:14][OH:15])[CH2:4][CH2:3][CH2:2]1参加物
5
実験手順
A solution of 10.0 g (62 mmol) of 3,4-dihydro-1-benzoxepin-5(2H)-one (J. Chem. Soc., Perkin Trans. 1 (1991), 2763) and 4.63 g (68 mmol) of hydroxylamine hydrochloride in 45 ml of ethanol and 45 ml of pyridine was heated under reflux for 5 h. After distilling off the solvents on a rotary evaporator, the residue was treated with water, adjusted to pH 2 with dil. hydrochloric acid and stirred for 3 h. After filtering off the precipitated product with suction and drying it, 10.2 g of 3,4-dihydro-1-benzoxepin-5(2H)-one oxime were obtained, m.p. 96-98° C.
後処理
- temperatureunder reflux for 5 h
- distillationAfter distilling off the solvents
- customon a rotary evaporator
- additionthe residue was treated with water
- filtrationAfter filtering off the precipitated product with suction
- customdrying it
出典と根拠
- ORDレコード
- ord-088a30e1f5564441806dd06c265ab31f
- 出典データセット
- uspto-grants-2001_12
- 特許番号
- US06333349B1
反応ノート
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