2-(4'-Chlorobenzoyl)benzoic acid → 3-(p-Chlorophenyl)-3-[2-(4-methylphenylsulfonylamino)ethylamino]phthalide

HRID 259160Notes

Reaction equation

HRID 259160 reaction equation
[Cl:1][C:2]1[CH:18]=[CH:17][C:5]([C:6]([C:8]2[CH:16]=[CH:15][CH:14]=[CH:13][C:9]=2[C:10]([OH:12])=O)=[O:7])=[CH:4][CH:3]=1.[NH2:19][CH2:20][CH2:21][NH:22][S:23]([C:26]1[CH:31]=[CH:30][C:29]([CH3:32])=[CH:28][CH:27]=1)(=[O:25])=[O:24].[K+].[Br-]>C(O)C.O.C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:6]2([NH:19][CH2:20][CH2:21][NH:22][S:23]([C:26]3[CH:31]=[CH:30][C:29]([CH3:32])=[CH:28][CH:27]=3)(=[O:25])=[O:24])[C:8]3[C:9](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:10](=[O:12])[O:7]2)=[CH:17][CH:18]=1

Participants

7

Reactant 3

HCID 665642-(4'-Chlorobenzoyl)benzoic acidHCID 253877Potassium BromideHCID 301318N-(2-Aminoethyl)-4-methylbenzenesulfonamide

Product 1

HCID 214233433-(p-Chlorophenyl)-3-[2-(4-methylphenylsulfonylamino)ethylamino]phthalide

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolvent2×HCID 1140TolueneSolvent

Procedure

To a flask equipped with a Dean-Stark water separator is charged 500 ml. of toluene, 24.0 g. (0.10 mole) of 2-(p-chlorobenzoyl) benzoic acid and 21.4 g. (0.10 mole) of N-(2-aminoethyl)-4-methylbenzene sulfonamide. The mixture is stirred and refluxed until the water level in the separator is constant. The reaction is then allowed to cool to room temperature and the resultant solid is filtered off, washed with 100 ml. of toluene and dried to give the above named phalide; m.p. 177°-179° C.: infrared (KBr), peaks at 3.00, 3.09, 3.37, 3.42, 3.48, 5.76, 6.25, 6.71, 7.42, 7.72, 8.58, 9.12, 9.90, 11.45, 12.80, 13.70, 17.30 and 18.20μ; ultraviolet (95% ethanol) maximum at 226 mμ (E1cm1% 637), 257 mμ (shoulder); N.M.R. (pyridine- d6) δ 2.22 (CH3), 3.57(4H, NCH2CH2N unresolved multiplet).

Workup

  1. additionis charged 500 ml
  2. filtrationthe resultant solid is filtered off
  3. washwashed with 100 ml
  4. dry with materialof toluene and dried
  5. customto give the above named phalide

Sources & evidence

ORD record
ord-e7f59f3a4b1a4d2eb75e4e9b5a9bfd22
Source dataset
uspto-grants-1977_07
Patent number
US04036855

Reaction notes

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