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Potassium Carbonate → 9-[4-(Cycloheptyloxy)phenyl]-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxide

HRID 1405744
Notes
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Reaction equation

HRID 1405744 reaction equation
[O:1]=[S:2]1(=[O:19])[CH2:7][CH2:6][N:5]2[CH:8]=[CH:9][CH:10]=[C:11]([C:12]3[CH:17]=[CH:16][C:15]([OH:18])=[CH:14][CH:13]=3)[C:4]2=[N:3]1.C(=O)([O-])[O-].[K+].[K+].Br[CH:27]1[CH2:33][CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]1.[OH-].[Na+]>CS(C)=O.C1COCC1.CCOC(C)=O>[CH:27]1([O:18][C:15]2[CH:16]=[CH:17][C:12]([C:11]3[C:4]4=[N:3][S:2](=[O:1])(=[O:19])[CH2:7][CH2:6][N:5]4[CH:8]=[CH:9][CH:10]=3)=[CH:13][CH:14]=2)[CH2:33][CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 11430Potassium CarbonateHCID 14798Sodium HydroxideHCID 16992Bromocycloheptane2×HCID 667478174-(2,2-Dioxido-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazin-9-yl)phenol

Product 1

HCID 667487069-[4-(Cycloheptyloxy)phenyl]-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxideYield 35.6%

Reagents, catalysts & solvents

3
HCID 679Dimethyl SulfoxideSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
130 °C

Procedure

To a mixture of 4-(2,2-dioxido-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazin-9-yl)phenol (300 mg), potassium carbonate (390 mg) in DMSO (5 mL) was added bromocycloheptane (250 mg). The mixture was stirred at 130° C. for 1 hr. Another bromocycloheptane (100 uL) was added and the mixture was stirred at room temperature overnight. 0.5 N NaOH aq., EtOAc and THF were added and the extracted organic layer was washed with water and brine, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was crystallized from MeCN/IPE to give the title compound (144 mg) as colorless crystals.

Workup

  1. stirringthe mixture was stirred at room temperature overnight
  2. washthe extracted organic layer was washed with water and brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe residue was crystallized from MeCN/IPE

Sources & evidence

ORD record
ord-6f3aafa1af7a491b806ea989e57c01de
Source dataset
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08916551B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes