Tetrabutylammonium Fluoride → HCID 135870878, compound

HRID 2388393Notes

Reaction equation

[Si]([O:8][C@@H:9]([CH3:41])[C@@H:10]([NH:30][C:31]1[CH:38]=[CH:37][C:34]([C:35]#[N:36])=[C:33]([Cl:39])[C:32]=1[CH3:40])[C:11]1[O:12][C:13]([C:16]2[CH:21]=[CH:20][C:19]([O:22][Si](C(C)(C)C)(C)C)=[CH:18][CH:17]=2)=[N:14][N:15]=1)(C(C)(C)C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>>[Cl:39][C:33]1[C:32]([CH3:40])=[C:31]([NH:30][C@@H:10]([C:11]2[O:12][C:13]([C:16]3[CH:17]=[CH:18][C:19]([OH:22])=[CH:20][CH:21]=3)=[N:14][N:15]=2)[C@@H:9]([OH:8])[CH3:41])[CH:38]=[CH:37][C:34]=1[C:35]#[N:36]

Participants

Reactant 2

HCID 2724141Tetrabutylammonium Fluoride

HCID 670064594-((1R,2S)-2-(tert-butyldimethylsilyloxy)-1-(5-(4-(tert-butyldimethylsilyloxy)phenyl)-1,3,4-oxadiazol-2-yl)propylamino)-2-chloro-3-methylbenzonitrile2×

Product 1

HCID 135870878HCID 135870878, compound

Procedure

Deprotection of 4-((1R,2S)-2-(tert-butyldimethylsilyloxy)-1-(5-(4-(tert-butyldimethyl silyloxy)phenyl)-1,3,4-oxadiazol-2-yl)propylamino)-2-chloro-3-methylbenzonitrile (intermediate 8c) (327 mg, 0.5 mmol) was performed as described for the preparation of example 7 using tetrabutylammonium fluoride (1.0 M solution in THF, 2.1 mL, 2.1 mmol). After column chromatography (80% EtOAc/hexanes) the title compound was isolated as a white solid (176 mg, 86%). 1H NMR (500 MHz, acetone-d6, δ in ppm) 7.84 (AA′XX′, J=9.0 Hz, 2H), 7.49 (d, J=8.7 Hz, 1H), 6.99 (AA′XX′, J=9 Hz, 2H), 6.86 (d, J=8.7 Hz, 1H), 5.67 (d, J=8.4 Hz, 1H), 5.06 (dd, J=3.8, 8.3 Hz, 1H), 4.60 (dd, J=3.6, 6.3 Hz, 1H), 2.39 (s, 3H), 1.40 (d, J=6.3 Hz, 3H).

Sources & evidence

ORD record: ord-01c79eee6fd7469b89bff3793898df7d
Source dataset: uspto-grants-2012_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08268872B2

Reaction notes

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