Benzenesulfonyl chloride → N-[2-({[(1R)-1-Phenylethyl]amino}methyl)-3,4-dihydro-2H-chromen-7-yl]-2,1,3-benzoxadiazole-4-sulfonamide

HRID 49463

Reaction equation

[NH2:1][C:2]1[CH:11]=[C:10]2[C:5]([CH2:6][CH2:7][CH:8]([CH2:12]O)[O:9]2)=[CH:4][CH:3]=1.[N:14]1[O:15][N:16]=[C:17]2[C:22]([S:23](Cl)(=[O:25])=[O:24])=[CH:21][CH:20]=[CH:19][C:18]=12.C1(S(Cl)(=O)=O)C=CC=CC=1.[C:37]1([C@H:43]([NH2:45])[CH3:44])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1>N1C=CC=CC=1.O>[C:37]1([C@H:43]([NH:45][CH2:12][CH:8]2[CH2:7][CH2:6][C:5]3[C:10](=[CH:11][C:2]([NH:1][S:23]([C:22]4[C:17]5[C:18](=[N:14][O:15][N:16]=5)[CH:19]=[CH:20][CH:21]=4)(=[O:25])=[O:24])=[CH:3][CH:4]=3)[O:9]2)[CH3:44])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1

Participants

Conditions

Temperature: 100 °C

Procedure

A solution of (7-amino-3,4-dihydro-2H-chromen-2-yl)methanol (28.6 mg, 160 μmol) in pyridine is treated with 2,1,3-benzoxadiazole-4-sulfonyl chloride (39 mg, 180 μmol) at ambient temperatures, stirred for 1 h, treated with phenylsulfonyl chloride (23 μL, 180 μmol) stirred for an additional hour at ambient temperatures, treated with (1R)-1-phenyl-1-ethanamine (1.6 mmol, 206 μL), heated to 100° C. for 2 h, cooled to room temperature, diluted with water and extracted with ethyl acetate. The extracts are combined, dried over Na2SO4 and concentrated in vacuo. The resultant residue is purified by reverse phase preparative HPLC to give the title product, M+H 465, retention time 3.89 min.

Workup

stirringstirred for an additional hour at ambient temperatures
temperaturecooled to room temperature
extractionextracted with ethyl acetate
dry with materialdried over Na2SO4
concentrationconcentrated in vacuo
customThe resultant residue is purified by reverse phase preparative HPLC

Sources & evidence

ORD record: ord-4be1e33e70914c3a85aad06d6d29f8d9
Source dataset: uspto-grants-2004_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06706757B2

Linked notes

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