4'-bromo-1'-methylspiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one → HCID 46194435, compound

HRID 2385535Notes

Reaction equation

HRID 2385535 reaction equation
[Br:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]1([C:16]3=[CH:17][C:18]4[O:22][CH2:21][O:20][C:19]=4[CH:23]=[C:15]3[O:14][CH2:13]1)[C:5](=[O:12])[N:6]2[CH3:11]>C(#N)C.C(OC)(C)(C)C>[Br:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C@:4]1([C:16]3=[CH:17][C:18]4[O:22][CH2:21][O:20][C:19]=4[CH:23]=[C:15]3[O:14][CH2:13]1)[C:5](=[O:12])[N:6]2[CH3:11]

Participants

3

Reactant 1

HCID 592634674'-bromo-1'-methylspiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one

Product 1

HCID 46194435HCID 46194435, compound

Reagents, catalysts & solvents 1

HCID 18457533HCID 18457533, compoundSolvent

Procedure

4′-Bromo-1′-methylspiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (0.32 g, 8.58 mmol) was resolved on a semi-preparative chiral column (CHIRALPAK-IA, Chiral Technologies, Inc.) and eluted with 5% acetonitrile in tent-butylmethylether at 30 mL/min. Each run consisted of 50 mg of the racemate dissolved in acetonitrile/tert-butylmethylether (1:1). (7S)-4′-bromo-1′-methylspiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (0.13 g, 81%) was the second enantiomer to elute and was isolated as a crystalline colorless solid: mp 226-227° C. (acetonitrile/tert-butylmethylether); 1H NMR (300 MHz, DMSO-d6) 7.31-7.23 (m, 1H), 7.20-7.15 (m, 1H), 7.12-7.08 (m, 1H), 6.59 (s, 1H), 6.28 (s, 1H), 5.92-5.87 (m, 2H), 4.82 (d, J=9.7 Hz, 1H), 4.67 (d, J=9.7 Hz, 1H), 3.15 (s, 3H); MS (ES+) m/z 373.8, 375.8 (M+1).

Workup

  1. washeluted with 5% acetonitrile in tent-butylmethylether at 30 mL/min
  2. dissolutiondissolved in acetonitrile/tert-butylmethylether (1:1)
  3. washto elute
  4. customwas isolated as a crystalline colorless solid

Sources & evidence

ORD record
ord-507ecfdac8864de0a20531356d7117be
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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