Hydrochloric Acid → 9-Bromo-3-chloro-8-((R)-2,3-dihydroxy-propoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-one

HRID 61830Notes

Reaction equation

HRID 61830 reaction equation
[Cl:1][C:2]1[CH:14]=[C:13]2[C:5]([C:6]3[C:7](=[O:31])[C:8]4[CH:20]=[C:19]([Br:21])[C:18]([O:22][CH2:23][C@H:24]5[CH2:28][O:27]C(C)(C)[O:25]5)=[CH:17][C:9]=4[C:10]([CH3:16])([CH3:15])[C:11]=3[NH:12]2)=[CH:4][CH:3]=1.Cl>CO>[Br:21][C:19]1[C:18]([O:22][CH2:23][C@H:24]([OH:25])[CH2:28][OH:27])=[CH:17][C:9]2[C:10]([CH3:15])([CH3:16])[C:11]3[NH:12][C:13]4[C:5]([C:6]=3[C:7](=[O:31])[C:8]=2[CH:20]=1)=[CH:4][CH:3]=[C:2]([Cl:1])[CH:14]=4

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 668343203-Chloro-9-bromo-8-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl methoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-one

Product 1

HCID 668343559-Bromo-3-chloro-8-((R)-2,3-dihydroxy-propoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-oneYield 50.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
50 °C

Procedure

3-Chloro-9-bromo-8-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-6,6-dimethyl-5,6-dihydro-benzo[b]carbazol-11-one (Compound S7-1, 56 mg, 0.11 mmol) was dissolved in methanol (5 mL), added with 1 N hydrochloric acid (0.2 ml), and stirred at 50° C. for 2 hr. After cooling, the reaction solution was concentrated under reduced pressure and the resulting residues were added with methanol to obtain a precipitated solid, which was then filtered to obtain the title compound (white powder, 26 mg).

Workup

  1. temperatureAfter cooling
  2. concentrationthe reaction solution was concentrated under reduced pressure
  3. additionthe resulting residues were added with methanol
  4. customto obtain a precipitated solid, which
  5. filtrationwas then filtered

Sources & evidence

ORD record
ord-50247f053a544f818d766f3e22719b19
Source dataset
uspto-grants-2016_09
Patent number
US09440922B2

Reaction notes

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