Cesium carbonate → HCID 86580853, compound

HRID 523298Notes

Reaction equation

HRID 523298 reaction equation
Br[C:2]1[C:14]2[C:13]3[C:8](=[CH:9][C:10]([C:15]([OH:18])([CH3:17])[CH3:16])=[CH:11][CH:12]=3)[NH:7][C:6]=2[C:5]([C:19]([NH2:21])=[O:20])=[CH:4][C:3]=1[Cl:22].[CH3:23][O:24][C:25]1[C:34]2[N:29]([C:30](=[O:52])[N:31]([C:36]3[CH:41]=[CH:40][CH:39]=[C:38](B4OC(C)(C)C(C)(C)O4)[C:37]=3[CH3:51])[C:32](=[O:35])[CH:33]=2)[CH:28]=[CH:27][CH:26]=1.C([O-])([O-])=O.[Cs+].[Cs+]>C1COCC1.O.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].C(Cl)Cl>[Cl:22][C:3]1[CH:4]=[C:5]([C:19]([NH2:21])=[O:20])[C:6]2[NH:7][C:8]3[C:13]([C:14]=2[C:2]=1[C:38]1[CH:39]=[CH:40][CH:41]=[C:36]([N:31]2[C:32](=[O:35])[CH:33]=[C:34]4[C:25]([O:24][CH3:23])=[CH:26][CH:27]=[CH:28][N:29]4[C:30]2=[O:52])[C:37]=1[CH3:51])=[CH:12][CH:11]=[C:10]([C:15]([OH:18])([CH3:17])[CH3:16])[CH:9]=3

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 1177612874-bromo-3-chloro-7-(2-hydroxypropan-2-yl)-9H-carbazole-1-carboxamide2×HCID 123689797HCID 123689797, compound2×

Product 1

HCID 86580853HCID 86580853, compoundYield 46.1%

Reagents, catalysts & solvents 3

HCID 178418807HCID 178418807, compoundCatalystHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of 4-bromo-3-chloro-7-(2-hydroxypropan-2-yl)-9H -carbazole-1-carboxamide [Intermediate 3] (0.051 g, 0.135 mmol), 5-methoxy-2-(2-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrido[1,2-c]pyrimidine-1,3(2H)-dione [Intermediate 32] (0.050 g, 0.122 mmol) and Cs2CO3 (0.080 g, 0.245 mmol) in THF (2 mL) and water (0.5 mL) was bubbled with nitrogen for 2 min, then was treated with PdCl2(dppf) DCM adduct (5.0 mg, 6.12 μmol). Bubbling with nitrogen was continued for 30 sec and the reaction vessel was sealed. The mixture was heated at 60° C. overnight. The cooled mixture was diluted with DCM and MeOH, dried and concentrated. The residue was purified by column chromatography on silica gel, eluting with EtOAc-hexanes, to give 3-chloro-7-(2-hydroxypropan-2-yl)-4-(3-(5-methoxy-1,3-dioxo-1H-pyrido[1,2-c]pyrimidin-2(3H)-yl)-2-methylphenyl)-9H-carbazole-1-carboxamide (mixture of four atropisomers) as a yellow solid (32.8 mg, 44% yield). Mass spectrum m/z 583 (M+H)+. 1H NMR (400 MHz, DMSO-d6) δ 11.51-11.47 (m, 1H), 8.27 (br. s., 1H), 8.14 (d, J=1.5 Hz, 1H), 7.93 (d, J=7.5 Hz, 1H), 7.83 (s, 1H), 7.59 (br. s., 1H), 7.55-7.45 (m, 3H), 7.30-7.25 (m, 1H), 7.03-6.97 (m, 1H), 6.71 (d, J=8.1 Hz, 1H), 6.56 (q, J=7.6 Hz, 1H), 5.90 (s, 1H), 4.98 (s, 1H), 3.91 (s, 3H), 1.69 (s, 3H), 1.45-1.42 (m, 6H).

Workup

  1. customwas bubbled with nitrogen for 2 min
  2. customBubbling with nitrogen
  3. customthe reaction vessel was sealed
  4. additionThe cooled mixture was diluted with DCM and MeOH
  5. customdried
  6. concentrationconcentrated
  7. customThe residue was purified by column chromatography on silica gel
  8. washeluting with EtOAc-hexanes

Sources & evidence

ORD record
ord-a96a1da716154721862c1550ba14c626
Source dataset
uspto-grants-2016_05
Patent number
US09334290B2

Reaction notes

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