(8R)-2-Methyl-7,8-dihydro[1,4]dioxino[2,3-g][1,3]benzoxazol-8-ylmethyl 4-methylbenzenesulfonate → 8-[4-(7-Fluoro-1H-indol-3-yl)-3,6-dihydro-2H-pyridin-1-ylmethyl]-2-methyl-7,8-dihydro-1,6,9-trioxa-3-aza-cyclopenta[a]naphthalene

HRID 1167163Notes

Reaction equation

HRID 1167163 reaction equation
CC1C=CC(S(O[CH2:12][C@H:13]2[CH2:26][O:25][C:16]3[CH:17]=[CH:18][C:19]4[N:20]=[C:21]([CH3:24])[O:22][C:23]=4[C:15]=3[O:14]2)(=O)=O)=CC=1.[F:27][C:28]1[CH:29]=[CH:30][CH:31]=[C:32]2[C:36]=1[NH:35][CH:34]=[C:33]2[C:37]1[CH2:38][CH2:39][NH:40][CH2:41][CH:42]=1>CS(C)=O.C(OCC)(=O)C>[F:27][C:28]1[CH:29]=[CH:30][CH:31]=[C:32]2[C:36]=1[NH:35][CH:34]=[C:33]2[C:37]1[CH2:38][CH2:39][N:40]([CH2:12][CH:13]2[O:14][C:15]3[C:16](=[CH:17][CH:18]=[C:19]4[N:20]=[C:21]([CH3:24])[O:22][C:23]4=3)[O:25][CH2:26]2)[CH2:41][CH:42]=1

Participants

5

Reactant 2

HCID 11245807(8R)-2-Methyl-7,8-dihydro[1,4]dioxino[2,3-g][1,3]benzoxazol-8-ylmethyl 4-methylbenzenesulfonateHCID 120834537-Fluoro-3-(1,2,3,6-tetrahydropyridin-4-yl)-1H-indole

Product 1

HCID 101590378-[4-(7-Fluoro-1H-indol-3-yl)-3,6-dihydro-2H-pyridin-1-ylmethyl]-2-methyl-7,8-dihydro-1,6,9-trioxa-3-aza-cyclopenta[a]naphthalene

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

[(8R)-2-Methyl-7,8-dihydro[1,4]dioxino[2,3-g][1,3]benzoxazol-8-yl]methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmole) and 7-fluoro-3-(1,2,3,6-tetrahydro-4-pyridinyl)-1H-indole (1.0 g, 4.6 mmole) were combined in 10 mL of DMSO under nitrogen. This solution was heated at 80° C. under nitrogen for six hours. After completion, the reaction was cooled to room temperature and diluted to 400 mL with ethyl acetate. The organic phase was washed with 400 mL portions of saturated aqueous sodium bicarbonate, water and saturated brine and concentrated in vacuum. The crude residue was column chromatographed on silica gel using 1% methanol/chloroform to give 0.50 g of the (S)-enantiomer of the title compound, which was a yellow solid (m.p. 208-210° C.) after evaporation of the solvent.

Workup

  1. temperatureAfter completion, the reaction was cooled to room temperature
  2. washThe organic phase was washed with 400 mL portions of saturated aqueous sodium bicarbonate, water and saturated brine
  3. concentrationconcentrated in vacuum
  4. customchromatographed on silica gel using 1% methanol/chloroform

Sources & evidence

ORD record
ord-8cc78206c782475f879885cd69cf413f
Source dataset
uspto-grants-2003_09
Patent number
US06617334B2

Reaction notes

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