Hydrochloric Acid → 7-Bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine hydrochloride

HRID 241087

反応式

HRID 241087 の反応式
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:11][CH2:10][CH2:9][N:8](C(OC(C)(C)C)=O)[CH2:7][C:6]=2[CH:19]=1.C(O)C.[ClH:23].O1CCOCC1>C(OCC)C>[ClH:23].[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:11][CH2:10][CH2:9][NH:8][CH2:7][C:6]=2[CH:19]=1

参加物

6

反応物 4

HCID 313Hydrochloric AcidHCID 702EthanolHCID 312751,4-DioxaneHCID 25220760tert-Butyl 7-bromo-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate

生成物 1

HCID 668201377-Bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine hydrochloride収率 98%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒

実験手順

1,1-dimethylethyl 7-bromo-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate (10 g, 30.5 mmol) was taken into hot ethanol (10 mL) followed by addition of 4 M hydrogen chloride in dioxane solution (2.1 eq, 16 mL) and the resulting solution was allowed to slowly cool to ambient temperature over one hour. An excess of ethyl ether was then added and the resulting slurry was filtered. The filter cake was washed with ethyl ether and dried to give 7-bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine hydrochloride (7.9 g, 98% yield) as a colorless crystalline solid. MS (EI) for C9H10NOBr: 229 (MH+).

後処理

  1. filtrationthe resulting slurry was filtered
  2. washThe filter cake was washed with ethyl ether
  3. customdried

出典と根拠

ORDレコード
ord-236090125a054c49b7aaa8c573f5deca
出典データセット
uspto-grants-2014_02
特許番号
US08648066B2

関連ノート

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