HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Benzenesulfonyl chloride → HCID 57041896, compound

HRID 1250864
Notes
Print preview

Reaction equation

HRID 1250864 reaction equation
[NH2:1][C@H:2]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:3][C:4]1[CH:16]=[CH:15][C:7]([O:8][CH2:9][CH2:10][CH2:11][C:12]([OH:14])=[O:13])=[CH:6][CH:5]=1.[C:24]1([S:30](Cl)(=[O:32])=[O:31])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(N(C(C)C)CC)(C)C>CN(C=O)C>[C:24]1([S:30]([NH:1][C@H:2]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:3][C:4]2[CH:16]=[CH:15][C:7]([O:8][CH2:9][CH2:10][CH2:11][C:12]([OH:14])=[O:13])=[CH:6][CH:5]=2)(=[O:32])=[O:31])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 7369Benzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 699227854-[4-((2S)-2-amino-2-tert-butoxycarbonyl-ethyl)-phenoxy]-butyric acid

Product 1

HCID 57041896HCID 57041896, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

224.5 mg of 4-[4-((2S)-2-amino-2-tert-butoxycarbonyl-ethyl)-phenoxy]-butyric acid were dissolved in 2 ml of DMF and cooled to 0° C. 207 mg of benzenesulfonyl chloride and 303 mg of diisopropylethylamine were added and the reaction mixture was stirred at 0° C. for 2 hours. The reaction mixture was cooled to −25° C. for 16 hours and then warmed to room temperature. The reaction was quenched by the addition of water, and the mixture was extracted three times with dichloromethane. The combined organic phases were dried with sodium sulfate, filtered and the solvent was removed in vacuo. The residue was chromatographed on silica gel eluting with dichloromethane/methanol/water/acetic acid (9/1/0.1/0.1). Yield 98 mg. MS (ES+): m/e=464.1 (M+H)+; 408.1.

Workup

  1. temperatureThe reaction mixture was cooled to −25° C. for 16 hours
  2. temperaturewarmed to room temperature
  3. customThe reaction was quenched by the addition of water
  4. extractionthe mixture was extracted three times with dichloromethane
  5. dry with materialThe combined organic phases were dried with sodium sulfate
  6. filtrationfiltered
  7. customthe solvent was removed in vacuo
  8. customThe residue was chromatographed on silica gel eluting with dichloromethane/methanol/water/acetic acid (9/1/0.1/0.1)

Sources & evidence

ORD record
ord-18f9cfacb862436ebe47848c4cde73a6
Source dataset
uspto-grants-2002_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06340679B1

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes