Acetic Anhydride → N-acetyl 1-(2,2-diphenyleth-1-yl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline

HRID 1071989Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1071989
[C:1]1([CH:7]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[CH2:8][CH:9]2[C:18]3[C:13](=[CH:14][C:15]([O:21][CH3:22])=[C:16]([O:19][CH3:20])[CH:17]=3)[CH2:12][CH2:11][NH:10]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(N(CC)CC)C.[C:36](OC(=O)C)(=[O:38])[CH3:37]>C(Cl)Cl.CCOCC>[C:36]([N:10]1[CH2:11][CH2:12][C:13]2[C:18](=[CH:17][C:16]([O:19][CH3:20])=[C:15]([O:21][CH3:22])[CH:14]=2)[CH:9]1[CH2:8][CH:7]([C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1)[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)(=[O:38])[CH3:37]

Komponenten

6

Edukt 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 223910171-(2,2-Diphenyleth-1-yl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline

Produkt 1

HCID 9909783N-acetyl 1-(2,2-diphenyleth-1-yl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolineAusbeute 96 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3283Diethyl EtherLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A stirred solution of 1-(2,2-diphenyleth-1-yl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline (1.8942 g, 5.0720 mmoles) in methylene chloride (15 mL) at 0° C. was treated with triethylamine (0.707 mL, 1.5 equiv.) and acetic anhydride (0.844 mL, 1.5 equiv.). After 2 hours at room temperature, The mixture was diluted with ether and washed with 1M sodium hydroxide (2×), water, and brine. The organic phase was dried over sodium sulfate and evaporated to give the product as a colorless foam (2.0178 g, 96%). 1H-NMR (CDCl3) δ (approx. 1.8:1 ratio of rotomers) 1.65 (rotomer A, s, 3H), 1.96 (rotomer B, s, 3H), 2.35 (rotomer B, m, 1H), 2.54 (rotomer A, m, 1H), 2.67 (rotomer A, m, 1H), 2.80 (rotomers A & B, m, 1H), 2.94 (rotomer A, m, 1H), 3.21 (rotomer A, m, 1H), 3.43 (rotomers A & B, m, 1H), 3.77 (rotomer B, s, 3H), 3.88 (rotomers A & B, s, 3H), 3.92 (rotomer A, s, 3H), 4.03 (rotomer A, m, 1H), 4.12 (rotomer B, t, 1H), 4.60 (rotomer B, m, 1H), 5.68 (rotomer A, m, 1H), 6.38 (rotomer B, s, 1H), 6.53 (rotomer A, s, 1H), 6.60 (rotomer B, s, 1H), 6.62 (rotomer A, s, 1H), 7.32 (rotomers A & B, m, 10H). Mass spec. 416.4 (MH)+. Anal. Calc. for C27H29NO3-2/3H2O: C-75.85, H-7.15, N-3.28. Found: C-75.89, H-7.03, N-3.24.

Aufarbeitung

  1. washwashed with 1M sodium hydroxide (2×), water, and brine
  2. dry with materialThe organic phase was dried over sodium sulfate
  3. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-dd3be0205a8343068aa8d5c70eec4ef9
Quelldatensatz
uspto-grants-2005_06
Patentnummer
US06908931B2

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