Hydrochloric Acid → (R)-tert-butyl 2-(((4-amino-2,2-dioxido-1H-benzo[c][1,2,6]thiadiazin-5-yl)oxy)methyl)piperidine-1-carboxylate

HRID 332961Notes

Reaction equation

HRID 332961 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][C@@H:9]1[CH2:14][O:15][C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([NH:22][S:23](=[O:26])(=[O:25])[NH2:24])[C:17]=1[C:27]#[N:28])=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH-].[Na+].Cl>C(O)C>[NH2:28][C:27]1[C:17]2[C:16]([O:15][CH2:14][C@H:9]3[CH2:10][CH2:11][CH2:12][CH2:13][N:8]3[C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:7])=[CH:21][CH:20]=[CH:19][C:18]=2[NH:22][S:23](=[O:26])(=[O:25])[N:24]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 86714285(R)-tert-butyl-2-((2-cyano-3-(sulfamoylamino)phenoxy)methyl)piperidine-1-carboxylate

Product 1

HCID 86714284(R)-tert-butyl 2-(((4-amino-2,2-dioxido-1H-benzo[c][1,2,6]thiadiazin-5-yl)oxy)methyl)piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of (R)-tert-butyl-2-((2-cyano-3-(sulfamoylamino)phenoxy)methyl)piperidine-1-carboxylate (Example 15c, 10.7 g, 26.1 mmol) in ethanol (130 mL) was added aqueous NaOH (2N, 130 mL, 26.1 mmol). The solution was refluxed for 18 hours under nitrogen. After cooling to room temperature, the solution was cooled to 0° C. and neutralized with 1N HCl. The mixture was partially concentrated and the product was collected by filtration to afford (R)-tert-butyl 2-(((4-amino-2,2-dioxido-1H-benzo[c][1,2,6]thiadiazin-5-yl)oxy)methyl)piperidine-1-carboxylate, which was used immediately in the next step. MS 311 (MH+-boc).

Workup

  1. temperatureThe solution was refluxed for 18 hours under nitrogen
  2. concentrationThe mixture was partially concentrated
  3. filtrationthe product was collected by filtration

Sources & evidence

ORD record
ord-55399d5311ed414e9cfa3917c1d0be03
Source dataset
uspto-grants-2014_11
Patent number
US08877922B2

Reaction notes

Loading…