Sodium cyanoborohydride → 6-Methoxy-1-methyl-8-(phenylsulfonyl)-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole

HRID 2423186Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:11]=[C:10]2[C:6]([CH:7]=[CH:8][N:9]2[S:12]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)(=[O:14])=[O:13])=[C:5]2[C:21]([CH3:26])=[N:22][CH2:23][CH2:24][O:25][C:4]=12.[BH3-]C#N.[Na+]>CCO>[CH3:1][O:2][C:3]1[CH:11]=[C:10]2[C:6]([CH:7]=[CH:8][N:9]2[S:12]([C:15]2[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=2)(=[O:14])=[O:13])=[C:5]2[CH:21]([CH3:26])[NH:22][CH2:23][CH2:24][O:25][C:4]=12

Participants

Conditions

Temperature: 65 °C

Procedure

To 6-methoxy-1-methyl-8-(phenylsulfonyl)-3,8-dihydro-4H-[1,4]oxazepino[6,7-e]indole (Intermediate 34, 0.010 g, 0.027 mmol) dissolved in EtOH (2 mL), NaCNBH3 (3.5 mg, 0.054 mmol) was added and the reaction mixture was heated at 65° C. for 2 hours. The reaction mixture was quenched by addition of water and the solvent was removed under reduced pressure. The crude product was purified by preparative HPLC (XTerra C18, 50 mM NH4HCO3 pH 10-CH3CN) to give the title compound (3.7 mg). MS m/z 373 [M+H]+.

Workup

customThe reaction mixture was quenched by addition of water
customthe solvent was removed under reduced pressure
customThe crude product was purified by preparative HPLC (XTerra C18, 50 mM NH4HCO3 pH 10-CH3CN)

Sources & evidence

ORD record: ord-9f456e90c6ee4a7586df0935c9cd5ed1
Source dataset: uspto-grants-2011_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07960374B2

Reaction notes

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