5-Bromo-2-iodopyrimidine → tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate

HRID 1623009Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1623009
[C:1]([C:5]1[CH:33]=[CH:32][C:8]([C:9]([NH:11][C@@H:12]([CH2:16][C:17]2[CH:22]=[CH:21][C:20](B3OC(C)(C)C(C)(C)O3)=[CH:19][CH:18]=2)[C:13]([O-:15])=[O:14])=[O:10])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[Br:34][C:35]1[CH:36]=[N:37][C:38](I)=[N:39][CH:40]=1>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].CC#N.C1COCC1.O>[Br:34][C:35]1[CH:36]=[N:37][C:38]([C:20]2[CH:19]=[CH:18][C:17]([CH2:16][C@H:12]([NH:11][C:9](=[O:10])[C:8]3[CH:32]=[CH:33][C:5]([C:1]([CH3:3])([CH3:2])[CH3:4])=[CH:6][CH:7]=3)[C:13]([O:15][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:14])=[CH:22][CH:21]=2)=[N:39][CH:40]=1

Komponenten

5

Edukt 2

HCID 70066515-Bromo-2-iodopyrimidineHCID 86689677(S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate

Produkt 1

HCID 86689676tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoateAusbeute 58 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)KatalysatorHCID 18694733Acetonitrile tetrahydrofuran waterLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

Prepared using General Procedure 10. Into a degassed solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate INT-13 (1.0 g, 2.0 mmol), Na2HCO3 (420 mg, 3.9 mmol), and 5-bromo-2-iodopyrimidine (615 mg, 2.2 mmol) in 2/2/1 MeCN/THF/H2O was added Pd(dppf)Cl2 (140 mg, 0.2 mmol). The reaction mixture was heated at 110° C. for 1 h in a microwave reactor. The reaction mixture was concentrated, dissolved in DCM and washed with H2O. The organic layer was dried over Na2SO4, concentrated, and purified by chromatography (EA/hexanes) to provide 630 mg (58%) of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate INT-14. LCMS-ESI (m/z) calculated for C28H32BrN4O3: 538.5; no m/z observed, tR=4.66 min (Method 1). 1H NMR (400 MHz, CDCl3) δ 8.84-8.78 (s, 2H), 8.31 (t, J=7.0 Hz, 2H), 7.75-7.64 (m, 2H), 7.46-7.38 (m, 2H), 7.30 (dd, J=12.9, 7.1 Hz, 2H), 6.65 (d, J=7.2 Hz, 1H), 5.10-4.94 (m, 1H), 3.43-3.20 (m, 2H), 1.45 (s, 9H), 1.32 (s, 9H).

Aufarbeitung

  1. customPrepared
  2. concentrationThe reaction mixture was concentrated
  3. dissolutiondissolved in DCM
  4. washwashed with H2O
  5. dry with materialThe organic layer was dried over Na2SO4
  6. concentrationconcentrated
  7. custompurified by chromatography (EA/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-422e11df87ec42448307be070e7a7801
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08778923B2

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