1,1'-Carbonyldiimidazole → HCID 67442049, compound

HRID 1801270Notes

Reaction equation

HRID 1801270 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][CH:14]=1)[NH:11][CH:10]([C:15]1[CH:16]=[C:17]([CH:21]=[CH:22][CH:23]=1)[C:18](O)=[O:19])[C:9]([CH3:25])([CH3:24])[CH2:8]2)=[O:4].C(N1C=CN=C1)(N1C=CN=C1)=O.[CH:38]1([S:41]([NH2:44])(=[O:43])=[O:42])[CH2:40][CH2:39]1.N12CCCN=C1CCCCC2>O1CCCC1.C(OCC)(=O)C>[CH:38]1([S:41]([NH:44][C:18]([C:17]2[CH:16]=[C:15]([CH:10]3[C:9]([CH3:25])([CH3:24])[CH2:8][C:7]4[C:12](=[CH:13][CH:14]=[C:5]([C:3]([O:2][CH3:1])=[O:4])[CH:6]=4)[NH:11]3)[CH:23]=[CH:22][CH:21]=2)=[O:19])(=[O:43])=[O:42])[CH2:40][CH2:39]1

Participants

7

Reactant 4

HCID 682631,1'-CarbonyldiimidazoleHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 15765418CyclopropanesulfonamideHCID 674419763-(6-(Methoxycarbonyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinolin-2-yl)benzoic acid

Product 1

HCID 67442049HCID 67442049, compoundYield 110.9%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

A solution of 3-(6-(methoxycarbonyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinolin-2-yl)benzoic acid (150 mg, 0.44 mmol) and 1,1′-carbonyldiimidazole (214 mg, 1.32 mmol) in tetrahydrofuran (3 mL) was heated to 60° C. for 1.5 h, then was cooled to room temperature and treated with cyclopropanesulfonamide (69.1 mg, 0.57 mmol). After stirring for 10 min, the reaction mixture was treated with dropwise addition of a solution of 1,8-diazabicyclo[5.4.0]undec-7-ene (221 mg, 1.45 mmol) in tetrahydrofuran (1 mL). Upon completion of addition, the resultant mixture was stirred for an additional 3 h, Thin layer chromatography (petroleum ether:ethyl acetate=1:1) showed the reaction was complete. The reaction mixture was quenched with brine and acidified with 1N hydrochloric acid solution to pH=6, extracted with ethyl acetate (twice). The combined organic layers were washed with brine for 3 times, dried over anhydrous magnesium sulfate. Removal of the solvent in vacuo gave 216 mg of methyl 2-(3-(cyclopropylsulfonylcarbamoyl)phenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylate as a white solid, which was pure enough for next step without further purification. MS (ESI+APCI) M+1=443.2.

Workup

  1. additionUpon completion of addition
  2. customThe reaction mixture was quenched with brine
  3. extractionextracted with ethyl acetate (twice)
  4. washThe combined organic layers were washed with brine for 3 times
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customRemoval of the solvent in vacuo

Sources & evidence

ORD record
ord-ae2fffd2bd9442e7977e0154a8f511e8
Source dataset
uspto-grants-2013_01
Patent number
US08344137B2

Reaction notes

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