1-Propanesulfonyl chloride → Propane-1-sulfonic acid {4-[2-(4-1,2-benzisothiazol-3-yl-piperazin-1-yl)-ethyl]-phenyl}-amide

HRID 2211897Notes

Reaction equation

[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[C:3]([N:10]2[CH2:15][CH2:14][N:13]([CH2:16][CH2:17][C:18]3[CH:23]=[CH:22][C:21]([NH2:24])=[CH:20][CH:19]=3)[CH2:12][CH2:11]2)=[N:2]1.[CH2:25]([S:28](Cl)(=[O:30])=[O:29])[CH2:26][CH3:27]>N1C=CC=CC=1.ClCCl>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[C:3]([N:10]2[CH2:11][CH2:12][N:13]([CH2:16][CH2:17][C:18]3[CH:19]=[CH:20][C:21]([NH:24][S:28]([CH2:25][CH2:26][CH3:27])(=[O:30])=[O:29])=[CH:22][CH:23]=3)[CH2:14][CH2:15]2)=[N:2]1

Participants

Conditions

Temperature: 45 °C

Procedure

4-[2-(4-Benzo[d]isothiazol-3-yl-piperazin-1-yl)-ethyl]-phenylamine was diluted to 0.3 M with anhydrous pyridine, then delivered to an 8 mL vial via pipette (0.225 mmol). Propane-1-sulfonyl chloride was diluted to 1.0 M with anhydrous dichloromethane, and added to the amine solution at rt (0.40 mmol). The solution was stirred overnight at 45° C. To the reaction mixture was added polyamine scavenging resin (0.30 mmol). The solution was stirred overnight at 45° C., then filtered into an 8 mL vial. The filtrate was evaluated by MS and concentrated via HT-12 GeneVac. Crude was purified by HPLC (30×100 mm ODS-A C(18) 5u column). Propane-1-sulfonic acid {4-[2-(4-1,2-benzisothiazol-3-yl-piperazin-1-yl)-ethyl]-phenyl}-amide was isolated in 100% purity @ 254 nm; LCMS (APCI): 445 [M+H]+

Workup

stirringThe solution was stirred overnight at 45° C.
filtrationfiltered into an 8 mL vial
concentrationconcentrated via HT-12 GeneVac
customCrude was purified by HPLC (30×100 mm ODS-A C(18) 5u column)

Sources & evidence

ORD record: ord-1809349c6e464ef0ba59747a4462197a
Source dataset: uspto-grants-2006_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07101886B2

Reaction notes

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