Water → HCID 50941659, compound

HRID 1919637Notes

Reaction equation

HRID 1919637 reaction equation
Br[C:2]1[S:3][CH:4]=[CH:5][C:6]=1[C:7]([O:9]C)=O.Cl.[NH2:12][C:13]1[CH:18]=[C:17]([C:19]([O:21][CH3:22])=[O:20])[CH:16]=[CH:15][C:14]=1B(O)O.C([O-])(=O)C.[Na+].O>CN(C=O)C.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]>[O:9]=[C:7]1[C:6]2[CH:5]=[CH:4][S:3][C:2]=2[C:14]2[CH:15]=[CH:16][C:17]([C:19]([O:21][CH3:22])=[O:20])=[CH:18][C:13]=2[NH:12]1

Participants

7

Reactant 4

HCID 962WaterHCID 517045Sodium AcetateHCID 164270832-Amino-4-(methoxycarbonyl)benzeneboronic acid hydrochlorideHCID 53302196Methyl 2-bromothiophene-3-carboxylate

Product 1

HCID 50941659HCID 50941659, compoundYield 50%

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
120 °C

Procedure

In a microwave vessel, methyl 2-bromo-3-thiophene carboxylate (1.0 eq, 260 mg, 1.18 mmol), 2-amino-4-(methoxycarbonyl)phenylboronic acid hydrochloride (1.1 eq, 300 mg, 1.30 mmol), sodium acetate (3.0 eq, 292 mg, 3.56 mmol) and PdCl2(dppf) (0.05 eq, 31 mg, 0.059 mmol) were mixed together in anhydrous DMF (2 ml). The mixture was heated in a microwave oven at 120° C. for 10 nm. Water was added and the solid filtered and dried. The material was suspended in CH2Cl2, filtered and dried to afford methyl 4-oxo-4,5-dihydrothieno[3,2-c]quinoline-7-carboxylate as a yellow solid (152 mg, 50% yield). LCMS (ES): 95% pure, m/z 260 [M+1]+; 1H NMR (CDCl3, 400 MHz) δ 3.99 (s, 3H), 7.54 (d, J=5.2, 1H), 7.79 (d, J=4.8, 1H), 7.86 (d, J=8.4, 1H), 7.91 (dd, J=8.4, J=1.6, 1H), 8.03 (d, J=1.2, 1H) ppm.

Workup

  1. filtrationthe solid filtered
  2. customdried
  3. filtrationfiltered
  4. customdried

Sources & evidence

ORD record
ord-14c5b14edb634e84aa990e16afbcd36d
Source dataset
uspto-grants-2012_05
Patent number
US08168651B2

Reaction notes

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