1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → HCID 19810407, compound

HRID 373497

Reaction equation

HRID 373497 reaction equation
Cl.CN(C)CCCN=C=NCC.[C:13]([O:17][C:18]([C:20]1[CH:28]=[CH:27][C:23]([C:24]([OH:26])=O)=[CH:22][CH:21]=1)=[O:19])([CH3:16])([CH3:15])[CH3:14].[CH3:29][CH:30]([S:32]([NH2:35])(=[O:34])=[O:33])[CH3:31]>CN(C)C1C=CN=CC=1.ClCCl.C(OCC)(=O)C>[CH:30]([S:32]([NH:35][C:24]([C:23]1[CH:22]=[CH:21][C:20]([C:18]([O:17][C:13]([CH3:14])([CH3:15])[CH3:16])=[O:19])=[CH:28][CH:27]=1)=[O:26])(=[O:34])=[O:33])([CH3:31])[CH3:29]

Participants

7

Reactant 3

HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27609544-(tert-Butoxycarbonyl)benzoic acidHCID 3549191Propane-2-sulfonamide

Product 1

HCID 19810407HCID 19810407, compoundYield 74.1%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (198 mg) was added to a stirred mixture of 4-(t-butoxycarbonyl)benzoic acid (195 mg), 2-propanesulfonamide (98 mg) and 4-dimethylaminopyridine (126 mg) in dichloromethane (3.7 ml). The mixture was stirred overnight, diluted with ethyl acetate, washed (1N HCl, brine), dried (MgSO4), and evaporated. The crude product was purified by flash chromatography, eluting with acetone:hexanes (75:25), to afford the product (193 mg): TLC, Rf =0.64, acetone:hexanes (75:25): MS, m/e=356(M+29), 330(M+3), 329(M+2), 328(M+1), 272, 223, 222, 205, 204, 166.

Workup

  1. washwashed (1N HCl, brine)
  2. dry with materialdried (MgSO4)
  3. customevaporated
  4. customThe crude product was purified by flash chromatography
  5. washeluting with acetone:hexanes (75:25)

Sources & evidence

ORD record
ord-399b20e674fb4381b5e6e750f26db590
Source dataset
uspto-grants-1992_11
Patent number
US05164371

Linked notes

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