Ammonia → cis-4-amino-5-chloro-2,3-dihydro-N-[3-methoxy-1-(4-oxopentyl)4-piperidinyl]-2,2-dimethyl-7-benzofurancarboxamide hemihydrate

HRID 1492438ノート

反応式

HRID 1492438 の反応式
[NH2:1][C:2]1[C:7]2[CH2:8][C:9]([CH3:12])([CH3:11])[O:10][C:6]=2[C:5]([C:13]([NH:15][C@H:16]2[CH2:21][CH2:20][N:19]([CH2:22][CH2:23][CH2:24][C:25]3([CH3:30])OCC[O:26]3)[CH2:18][C@H:17]2[O:31][CH3:32])=[O:14])=[CH:4][C:3]=1[Cl:33].S(=O)(=O)(O)O.N>>[OH2:10].[NH2:1][C:2]1[C:7]2[CH2:8][C:9]([CH3:11])([CH3:12])[O:10][C:6]=2[C:5]([C:13]([NH:15][C@H:16]2[CH2:21][CH2:20][N:19]([CH2:22][CH2:23][CH2:24][C:25](=[O:26])[CH3:30])[CH2:18][C@H:17]2[O:31][CH3:32])=[O:14])=[CH:4][C:3]=1[Cl:33].[NH2:1][C:2]1[C:7]2[CH2:8][C:9]([CH3:11])([CH3:12])[O:10][C:6]=2[C:5]([C:13]([NH:15][C@H:16]2[CH2:21][CH2:20][N:19]([CH2:22][CH2:23][CH2:24][C:25](=[O:26])[CH3:30])[CH2:18][C@H:17]2[O:31][CH3:32])=[O:14])=[CH:4][C:3]=1[Cl:33]

参加物

4

反応物 3

HCID 222AmmoniaHCID 1118Sulfuric AcidHCID 67712855cis-4-amino-5-chloro-2,3-dihydro-N-[3-methoxy-1-[3-(2-methyl-1,3-dioxolan-2-yl)propyl]-4-piperidinyl]2,2-dimethyl-7-benzofurancarboxamide

生成物 1

HCID 131718804cis-4-amino-5-chloro-2,3-dihydro-N-[3-methoxy-1-(4-oxopentyl)4-piperidinyl]-2,2-dimethyl-7-benzofurancarboxamide hemihydrate収率 51.6%

実験手順

A mixture of 5.4 parts of cis-4-amino-5-chloro-2,3-dihydro-N-[3-methoxy-1-[3-(2-methyl-1,3-dioxolan-2-yl)propyl]-4-piperidinyl]-2,2-dimethyl-7-benzofurancarboxamide and 85 ml of an aqueous sulfuric acid solution 1% was stirred for 2 hours at reflux temperature. After cooling, the reaction mixture was basified with ammonia and extracted with dichloromethane (2x). The combined extracts were dried, filtered and evaporated. The residue was purified by column chromatography (silica gel; CH2Cl2 /CH3OH 95:5). The eluent of the desired fraction was evaporated and the residue was suspended in 2,2'-oxybispropane. The product was filtered off and dried, yielding 2.4 parts (51.6%) of cis-4-amino-5-chloro-2,3-dihydro-N-[3-methoxy-1-(4-oxopentyl)-4-piperidinyl]-2,2-dimethyl-7-benzofurancarboxamide hemihydrate; mp. 137.7° C. (comp. 112).

後処理

  1. temperatureat reflux temperature
  2. temperatureAfter cooling
  3. extractionextracted with dichloromethane (2x)
  4. customThe combined extracts were dried
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by column chromatography (silica gel; CH2Cl2 /CH3OH 95:5)
  8. customThe eluent of the desired fraction was evaporated
  9. filtrationThe product was filtered off
  10. customdried

出典と根拠

ORDレコード
ord-ee157bf483e2473dbf2a51bd6f5fa16f
出典データセット
uspto-grants-1994_12
特許番号
US05374637

反応ノート

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