Triethylamine → HCID 2057054, Verbindung

HRID 1888452Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1888452
[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6]Br)=[CH:4][CH:3]=1.C(N(CC)CC)C.C[C@:18]1([OH:24])[CH2:23][CH2:22][CH2:21][NH:20][CH2:19]1>C1COCC1>[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6][N:20]2[CH2:21][CH2:22][CH2:23][C@H:18]([OH:24])[CH2:19]2)=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 685274-Bromobenzyl bromideHCID 28064083(3S)-3-Methylpiperidin-3-ol

Produkt 1

HCID 2057054HCID 2057054, VerbindungAusbeute 74 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A mixture of 4-bromobenzyl bromide (1.0 g, 4.0 mmol), triethylamine (0.84 mL, 6.0 mmol) and (S)-3-methyl-piperidin-3-ol (1.11 g, 8.0 mmol) in THF (20 mL) was stirred at ambient temperature for 16 h. The solvent was evaporated and the resultant residue diluted with saturated aqueous sodium bicarbonate solution and extracted with ethyl acetate (2×50 mL). The combined organic layer was dried over sodium sulfate, filtered and evaporated. The resultant residue was purified by flash chromatography (silica, Biotage 50 g column, 50-100% ethyl acetate in cyclohexane) to afford the title compound (0.8 g, 74%). 1H NMR (CDCl3, 300 MHz): 7.46-7.40 (m, 2H), 7.21-7.14 (m, 2H), 3.85-3.76 (m, 1H), 3.45 (s, 2H), 2.45 (s, 3H), 2.29-2.16 (m, 1H), 1.86-1.70 (m, 1H), 1.67-1.45 (m, 3H) plus 1 exchangeable not observed. LCMS (Method G): RT=1.42 min, M+H+=270.

Aufarbeitung

  1. customThe solvent was evaporated
  2. additionthe resultant residue diluted with saturated aqueous sodium bicarbonate solution
  3. extractionextracted with ethyl acetate (2×50 mL)
  4. dry with materialThe combined organic layer was dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe resultant residue was purified by flash chromatography (silica, Biotage 50 g column, 50-100% ethyl acetate in cyclohexane)

Quellen und Nachweise

ORD-Eintrag
ord-8919ea101d334ec09f7ac448d0698f07
Quelldatensatz
uspto-grants-2013_08
Patentnummer
US08501765B2

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