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Triethylamine → 4-{4-[Bis(methanesulfonyl)amino]phenyl}butylcarbamic acid tert-butyl ester

HRID 1795041
Notes
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Reaction equation

HRID 1795041 reaction equation
[C:1]([O:5][C:6](=[O:19])[NH:7][CH2:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([NH2:18])=[CH:14][CH:13]=1)([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:27][S:28](Cl)(=[O:30])=[O:29]>C1COCC1.CN(C)C1C=CN=CC=1>[C:1]([O:5][C:6](=[O:19])[NH:7][CH2:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:13]=[CH:14][C:15]([N:18]([S:28]([CH3:27])(=[O:30])=[O:29])[S:28]([CH3:27])(=[O:30])=[O:29])=[CH:16][CH:17]=1)([CH3:4])([CH3:2])[CH3:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 11558019[4-(4-Aminophenyl)butyl]carbamic acid tert-butyl ester

Product 1

HCID 668495244-{4-[Bis(methanesulfonyl)amino]phenyl}butylcarbamic acid tert-butyl esterYield 83%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridine
Catalyst
HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-10 °C

Procedure

Compound 52 (0.16 g, 0.605 mmol) was dissolved in anhydrous THF (5 mL). To the clear solution were sequentially added triethylamine (0.18 mL, 1.21 mmol) and 4-dimethylaminopyridine (15 mg, 0.121 mmol). The mixture was cooled to about −10° C. for 15 min by a methanol-ice bath. To the cold solution was slowly added methanesulfonyl chloride (51 μL). The solution was further stirred at the temperature (about −10° C.) for an additional 30 min, then allowed to slowly warm up to room temperature by removing the cooling bath. The reaction mixture was concentrated under reduced pressure. The residue was chromatographed over silica gel, eluting with a mixture of ethyl acetate (0–35%) and hexanes (100–65%), to afford 0.212 g (83%) of the product 53 as a white solid. 1H NMR (CDCl3) δ 1.44 (s, 9H), 1.52–1.70 (m, 4H), 2.68 (t, J=7.4 Hz, 2H), 3.13–3.18 (m, 2H), 3.40 (s, 6H), 4.53 (br s, 1H), 7.27 (s, 4H). m/z (APCI)=321 [C17H28N2O6S2-Boc+H]+.

Workup

  1. temperatureto slowly warm up to room temperature
  2. customby removing the cooling bath
  3. concentrationThe reaction mixture was concentrated under reduced pressure
  4. customThe residue was chromatographed over silica gel
  5. washeluting with a mixture of ethyl acetate (0–35%) and hexanes (100–65%)

Sources & evidence

ORD record
ord-76fbc3fea25d4a51bce79a3e93642464
Source dataset
uspto-grants-2006_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07026325B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes