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Benzenesulfonamide → N-[4-[6-(Cyclopentyloxycarbonyl)amino-2,3-dihydrobenz-1,4-oxazin-4ylmethyl]-3-methoxybenzoyl]benzenesulphonamide

HRID 1723213
Notes
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Reaction equation

HRID 1723213 reaction equation
[C:1]1([S:7]([NH2:10])(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH:11]1([O:16][C:17]([NH:19][C:20]2[CH:21]=[CH:22][C:23]3[O:28][CH2:27][CH2:26][N:25]([CH2:29][C:30]4[CH:38]=[CH:37][C:33]([C:34](O)=[O:35])=[CH:32][C:31]=4[O:39][CH3:40])[C:24]=3[CH:41]=2)=[O:18])[CH2:15][CH2:14][CH2:13][CH2:12]1.Cl.CN(C)CCCN=C=NCC>CN(C)C1C=CN=CC=1.ClCCl>[CH:11]1([O:16][C:17]([NH:19][C:20]2[CH:21]=[CH:22][C:23]3[O:28][CH2:27][CH2:26][N:25]([CH2:29][C:30]4[CH:38]=[CH:37][C:33]([C:34]([NH:10][S:7]([C:1]5[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=5)(=[O:9])=[O:8])=[O:35])=[CH:32][C:31]=4[O:39][CH3:40])[C:24]=3[CH:41]=2)=[O:18])[CH2:15][CH2:14][CH2:13][CH2:12]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 7370BenzenesulfonamideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 147631294-[6-(Cyclopentyloxycarbonyl)amino-2,3-dihydrobenz-1,4-oxazin-4-ylmethyl]-3-methoxybenzoic acid

Product 1

HCID 14763130N-[4-[6-(Cyclopentyloxycarbonyl)amino-2,3-dihydrobenz-1,4-oxazin-4ylmethyl]-3-methoxybenzoyl]benzenesulphonamideYield 54%

Reagents, catalysts & solvents

2
HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

Benzenesulphonamide (0.037 g.) was added to a stirred solution of 4-[6-(cyclopentyloxycarbonyl)amino-2,3-dihydrobenz-1,4-oxazin-4-ylmethyl]-3-methoxybenzoic acid (0.1 g.), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.046 g.) and 4-(dimethylamino)pyridine (0.029 g.) in dichloromethane (5 ml.), under an atmosphere of nitrogen. The mixture was stirred for 21 hours and then diluted with dichloromethane. This mixture was washed successively with 1M hydrochloric acid (2×10 ml.), 5% w/v sodium bicarbonate solution (2×10 ml.), and saturated brine (20 ml.). It was then dried (MgSO4) and evaporated. The residue was purified by flash chromatography on silica gel (3 cm. diameter column) eluting with 1:1 v/v ethyl acetate:hexane. The solid obtained was recrystallized crystallized from ethyl acetate to give the title compound as a white powder (0.071 g., 54%), m.p. 186°-187° C.

Workup

  1. washThis mixture was washed successively with 1M hydrochloric acid (2×10 ml.), 5%
  2. dry with materialIt was then dried (MgSO4)
  3. customevaporated
  4. customThe residue was purified by flash chromatography on silica gel (3 cm. diameter column)
  5. washeluting with 1:1 v/v ethyl acetate
  6. customThe solid obtained
  7. customwas recrystallized
  8. customcrystallized from ethyl acetate

Sources & evidence

ORD record
ord-39120f12ecf249658922c10f0f2e908e
Source dataset
uspto-grants-1989_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US04859692

Reaction notes

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