Formamide → HCID 178518067、化合物
反応式
C([C:3]1[C:4]([C:9]([OH:11])=O)=[C:5]([NH2:8])[S:6][CH:7]=1)C.C([O-])=O.[NH4+].[CH:16]([NH2:18])=O>>[N:8]1[C:5]2[S:6][CH:7]=[CH:3][C:4]=2[C:9]([OH:11])=[N:18][CH:16]=1参加物
4
実験手順
Ethyl 2-amino-3-carboxythiophene 2 is refluxed with ammonium formate and formamide to give the cyclized intermediate 3 which is then treated with thionyl chloride to afford the chloro derivative 4. Boc-protected aminopiperidine 5 is reductively alkylated with a variety of arylaldehydes 6 to provide the corresponding intermediates 7. Deprotection of 7 with trifluoroacetic acid treatment yields the free amine intermediate 8. Reflux of a mixture of the key intermediates 4 and 8 in i-propanol or acetonitrile in the presence of triethylamine yields the final compound 1.
出典と根拠
- ORDレコード
- ord-1d530b4e1e6c40f7abbe461358d050ff
- 出典データセット
- uspto-grants-2009_11
- 特許番号
- US07612078B2
反応ノート
読み込み中…