4-Vinylpyridine → N-[1-[2-(4-pyridinyl)ethyl]-4-piperidinyl]-2-benzoxazolamine

HRID 1723443Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1723443
[CH:1]([C:3]1[CH:8]=[CH:7][N:6]=[CH:5][CH:4]=1)=[CH2:2].[NH:9]1[CH2:14][CH2:13][CH:12]([NH:15][C:16]2[O:17][C:18]3[CH:24]=[CH:23][CH:22]=[CH:21][C:19]=3[N:20]=2)[CH2:11][CH2:10]1>C(O)CCC>[N:6]1[CH:7]=[CH:8][C:3]([CH2:1][CH2:2][N:9]2[CH2:10][CH2:11][CH:12]([NH:15][C:16]3[O:17][C:18]4[CH:24]=[CH:23][CH:22]=[CH:21][C:19]=4[N:20]=3)[CH2:13][CH2:14]2)=[CH:4][CH:5]=1

Komponenten

4

Edukt 2

HCID 75024-VinylpyridineHCID 14575294N-(4-piperidinyl)-2-benzoxazolamine

Produkt 1

HCID 14575870N-[1-[2-(4-pyridinyl)ethyl]-4-piperidinyl]-2-benzoxazolamineAusbeute 62 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 2631-ButanolLösungsmittel

Versuchsvorschrift

A mixture of 3.2 parts of 4-(1-ethenyl)pyridine, 2.1 parts of N-(4-piperidinyl)-2-benzoxazolamine and 80 parts of 1-butanol was stirred and refluxed for 48 hours. The reaction mixture was evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (97:3 by volume) saturated with ammonia, as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from 2,2'-oxybispropane, yielding 2 parts (62%) of N-[1-[2-(4-pyridinyl)ethyl]-4-piperidinyl]-2-benzoxazolamine; mp. 146.9° C. (450).

Aufarbeitung

  1. temperaturerefluxed for 48 hours
  2. customThe reaction mixture was evaporated
  3. customThe residue was purified by column chromatography over silica gel using
  4. additiona mixture of trichloromethane and methanol (97:3 by volume) saturated with ammonia
  5. customThe pure fractions were collected
  6. customthe eluent was evaporated
  7. customThe residue was crystallized from 2,2'-oxybispropane

Quellen und Nachweise

ORD-Eintrag
ord-5838677f32fb46fd84bcf7fe3a74ba4f
Quelldatensatz
uspto-grants-1989_08
Patentnummer
US04861785

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