Sodium Hydroxide → HCID 11596645, compound

HRID 374874Notes

Reaction equation

[F:1][C:2]([F:10])([F:9])[C:3]([OH:8])([CH3:7])[C:4](O)=[O:5].S(Cl)(Cl)=O.[Cl:15][C:16]1[C:21]([NH2:22])=[CH:20][C:19]([S:23]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)(=[O:25])=[O:24])=[CH:18][CH:17]=1.[OH-].[Na+]>CN(C)C(=O)C>[F:1][C:2]([F:10])([F:9])[C:3]([OH:8])([CH3:7])[C:4]([NH:22][C:21]1[C:16]([Cl:15])=[CH:17][CH:18]=[C:19]([S:23]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)(=[O:25])=[O:24])[CH:20]=1)=[O:5]

Participants

Conditions

Temperature: -20 °C

Procedure

To a solution containing 3,3,3-trifluoro-2-hydroxy-2-methylpropanoic acid (2.00 g) in N,N-dimethylacetamide (40 mL) cooled to -20° C. was added thionyl chloride (1.50 g) and the mixture was stirred for 1.0 hour. 6-chloro-3-phenylsulfonylaniline (2.42 g) was added in one portion and mixture was stirred for 48 hours at room temperature. The reaction mixture was poured into aqueous sodium hydroxide (1.0N, 250 mL) and extracted with ethyl acetate. The combined ethyl acetate extracts were washed (aqueous sodium hydroxide, brine) and evaporated. Chromatography, with hexane:ethyl acetate as the eluent (4:1 then 2:1) yielded the title compound as a white solid (1.25 g); mp: 79°-80° C.; NMR (250 MHz): 1.61 (s,3), 7.69 (m,3), 7.82 (m,2), 7.94 (d,1, J=9), 7.98 (m,2), 8.52 (s,1), 9.93 (s,1); MS: m/z=408(M+1). Analysis for C16H13ClF3NO4S: Calculated: C, 47.11; H, 3.19; N, 3.44; Found: C, 47.10; H, 3.28; N, 3.38.

Workup

stirringwas stirred for 48 hours at room temperature
extractionextracted with ethyl acetate
washThe combined ethyl acetate extracts were washed (aqueous sodium hydroxide, brine)
customevaporated

Sources & evidence

ORD record: ord-b42cdd1cf9e645d290d4cbec2c04f782
Source dataset: uspto-grants-1996_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05482969

Reaction notes

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