Pyridine → Methyl 2-(2-(1-(3-(3-(tert-butyldimethylsilyloxy)phenoxy)phenyl)-2-oxabicyclo [2.2.2]octan-4-yl)ethyl)cyclopropanecarboxylate

HRID 1855092Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1855092
[OH:1][C:2]1[CH:3]=[C:4]([C:8]23[CH2:15][CH2:14][C:11]([CH2:16][CH2:17][CH:18]4[CH2:20][CH:19]4[C:21]([O:23][CH3:24])=[O:22])([CH2:12][CH2:13]2)[CH2:10][O:9]3)[CH:5]=[CH:6][CH:7]=1.[Si:25]([O:32][C:33]1[CH:34]=[C:35](B(O)O)[CH:36]=[CH:37][CH:38]=1)([C:28]([CH3:31])([CH3:30])[CH3:29])([CH3:27])[CH3:26].N1C=CC=CC=1.CC1C=CC(S(OCC23CCC(C4SC(C)=NC=4C4C=CC=CC=4)(CC2)OC3)(=O)=O)=CC=1>C(Cl)Cl.CC([O-])=O.CC([O-])=O.[Cu+2]>[Si:25]([O:32][C:33]1[CH:34]=[C:35]([CH:36]=[CH:37][CH:38]=1)[O:1][C:2]1[CH:3]=[C:4]([C:8]23[CH2:15][CH2:14][C:11]([CH2:16][CH2:17][CH:18]4[CH2:20][CH:19]4[C:21]([O:23][CH3:24])=[O:22])([CH2:12][CH2:13]2)[CH2:10][O:9]3)[CH:5]=[CH:6][CH:7]=1)([C:28]([CH3:31])([CH3:30])[CH3:29])([CH3:27])[CH3:26]

Komponenten

7

Edukt 4

HCID 1049PyridineHCID 34630293-(tert-Butyldimethylsilyloxy)phenylboronic AcidHCID 90408261Methyl 2-(2-(1-(3-hydroxyphenyl)-2-oxabicyclo[2.2.2]octan-4-yl)ethyl)cyclopropane-carboxylateHCID 90408478(1-(2-Methyl-4-phenylthiazol-5-yl)-2-oxabicyclo[2.2.2]octan-4-yl)methyl 4-methylbenzenesulfonate

Produkt 1

HCID 90409051Methyl 2-(2-(1-(3-(3-(tert-butyldimethylsilyloxy)phenoxy)phenyl)-2-oxabicyclo [2.2.2]octan-4-yl)ethyl)cyclopropanecarboxylateAusbeute 97,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8895Cupric acetateKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A mixture of methyl 2-(2-(1-(3-hydroxyphenyl)-2-oxabicyclo[2.2.2]octan-4-yl)ethyl)cyclopropane-carboxylate (65B; 360 mg, 1.09 mmol), (3-((tert-butyldimethylsilyl)oxy)phenyl)boronic acid (340 mg, 1.348 mmol), Cu(OAc)2 (237 mg, 1.31 mmol), TEA (1.52 mL, 10.9 mmol), pyridine (0.88 mL, 10.9 mmol), and 4A molecular sieves (5 g) in DCM (10 mL) was stirred under air at rt for 3 days. The reaction was then filtered, and the filtrate was concentrated in vacuo. The residual crude oil was dissolved in EtOAc (15 mL) and washed with 1N aq. HCl and water, dried (MgSO4), and filtered. The filtrate was concentrated in vacuo. The residual crude oil was chromatographed (SiO2; gradient from 0% to 30% over 10 min EtOAc/hexane) to give the title compound (570 mg, 1.06 mmol, 97% yield) as a clear oil. LCMS [M+H]+=537.3; 1H NMR (CDCl3) δ: 7.26 (t, J=7.9 Hz, 1H), 7.18-7.11 (m, 2H), 7.09 (dd, J=2.5, 1.7 Hz, 1H), 6.85 (ddd, J=8.1, 2.5, 1.0 Hz, 1H), 6.58 (dd, J=8.2, 2.3 Hz, 2H), 6.49 (t, J=2.3 Hz, 1H), 3.78 (d, J=1.1 Hz, 2H), 3.68 (s, 3H), 2.00 (dt, J=11.4, 4.1 Hz, 4H), 1.62 (dtd, J=8.1, 4.1, 3.5, 2.0 Hz, 4H), 1.41-1.14 (m, 7H), 0.97 (s, 9H), 0.71 (ddd, J=8.1, 6.3, 4.1 Hz, 1H), 0.18 (s, 6H).

Aufarbeitung

  1. filtrationThe reaction was then filtered
  2. concentrationthe filtrate was concentrated in vacuo
  3. dissolutionThe residual crude oil was dissolved in EtOAc (15 mL)
  4. washwashed with 1N aq. HCl and water
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated in vacuo
  8. customThe residual crude oil was chromatographed (SiO2; gradient from 0% to 30% over 10 min EtOAc/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-6299f02186304225bb74d4abfc465d63
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08962660B2

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