Hydrochloric Acid → [1-[1-[(3,4-dihydro-2H-1-benzopyran-2-yl)methyl]-4-piperidinyl]1H-imidazol-2-yl]cyanamide

HRID 367282ノート

反応式

HRID 367282 の反応式
[C:1]([N:3]=[C:4]([NH:23][CH2:24][CH:25](OC)OC)[NH:5][CH:6]1[CH2:11][CH2:10][N:9]([CH2:12][CH:13]2[CH2:18][CH2:17][C:16]3[CH:19]=[CH:20][CH:21]=[CH:22][C:15]=3[O:14]2)[CH2:8][CH2:7]1)#[N:2].Cl.C([O-])([O-])=O.[Na+].[Na+]>C1COCC1>[O:14]1[C:15]2[CH:22]=[CH:21][CH:20]=[CH:19][C:16]=2[CH2:17][CH2:18][CH:13]1[CH2:12][N:9]1[CH2:10][CH2:11][CH:6]([N:5]2[CH:25]=[CH:24][N:23]=[C:4]2[NH:3][C:1]#[N:2])[CH2:7][CH2:8]1

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 10340Sodium CarbonateHCID 178495968HCID 178495968、化合物

生成物 1

HCID 9797906[1-[1-[(3,4-dihydro-2H-1-benzopyran-2-yl)methyl]-4-piperidinyl]1H-imidazol-2-yl]cyanamide収率 33.9%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

A mixture of N"-cyano-N-[1-[(3,4-dihydro-2H-1-benzopyran-2-yl)methyl]-4-piperidinyl]-N'-(2,2-dimethoxyethyl) guanidine (0.0153 mol) and HCl (0.5N, 46 ml) in THF (160 ml) was stirred and refluxed for 100 minutes. Ice-water was added. Na2CO3 was added portionwise to obtain a clear separation. The organic layer was separated, DCM was added, the whole was washed with water, dried, filtered and the solvent was evaporated. The residue was separated and purified by column chromatography over silica gel (separation first compound:eluent: CH2Cl2 /CH3OH 95/5; separation second compound: CH2Cl2 /(CH3OH/NH3) 90/10). The two pure fraction groups were collected and their solvent was evaporated. Each residue was crystallized from ACN. Each precipitate was filtered off and dried, yielding 1.75 g [1-[1-[(3,4-dihydro-2H-1-benzopyran-2-yl)methyl]-4-piperidinyl]-1H-imidazol-2-yl]cyanamide (compound 59) and 0.48 g(±)-[1-[1-[(3,4-dihydro-2H-1-benzopyran-2-yl)methyl]-4-piperidinyl]-1H-imidazol-2-yl]urea (compound 66).

後処理

  1. temperaturerefluxed for 100 minutes
  2. customto obtain
  3. customa clear separation
  4. customThe organic layer was separated
  5. additionDCM was added
  6. washthe whole was washed with water
  7. customdried
  8. filtrationfiltered
  9. customthe solvent was evaporated
  10. customThe residue was separated
  11. custompurified by column chromatography over silica gel (separation first compound:eluent: CH2Cl2 /CH3OH 95/5; separation second compound: CH2Cl2 /(CH3OH/NH3) 90/10)
  12. customThe two pure fraction groups were collected
  13. customtheir solvent was evaporated
  14. customEach residue was crystallized from ACN
  15. filtrationEach precipitate was filtered off
  16. customdried

出典と根拠

ORDレコード
ord-8cf2da606f184d6baefa127d20f1c5ad
出典データセット
uspto-grants-2000_10
特許番号
US06133277

反応ノート

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