4-Toluenesulfonyl chloride → 2-chloro-4-((1R,2R)-1-(5-(4-cyanophenyl)-1,3,4-oxadiazol-2-yl)-2-hydroxypropylamino)-3-methylbenzonitrile

HRID 1254669Notes

Reaction equation

HRID 1254669 reaction equation
[Cl:1][C:2]1[C:3]([CH3:29])=[C:4]([NH:10][C@H:11]([C@H:26]([OH:28])[CH3:27])[C:12]([NH:14][NH:15][C:16](=[O:25])[C:17]2[CH:22]=[CH:21][C:20]([C:23]#[N:24])=[CH:19][CH:18]=2)=O)[CH:5]=[CH:6][C:7]=1[C:8]#[N:9].S(Cl)(C1C=CC(C)=CC=1)(=O)=O.C(N=P1(N(CC)CC)N(C)CCCN1C)(C)(C)C>C1COCC1>[Cl:1][C:2]1[C:3]([CH3:29])=[C:4]([NH:10][C@@H:11]([C:12]2[O:25][C:16]([C:17]3[CH:18]=[CH:19][C:20]([C:23]#[N:24])=[CH:21][CH:22]=3)=[N:15][N:14]=2)[C@H:26]([OH:28])[CH3:27])[CH:5]=[CH:6][C:7]=1[C:8]#[N:9]

Participants

5

Reactant 3

HCID 73974-Toluenesulfonyl chlorideHCID 35138512-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amine2×HCID 67006999N'-((2R,3R)-2-(3-chloro-4-cyano-2-methylphenylamino)-3-hydroxybutanoyl)-4-cyanobenzohydrazide

Product 1

HCID 442008832-chloro-4-((1R,2R)-1-(5-(4-cyanophenyl)-1,3,4-oxadiazol-2-yl)-2-hydroxypropylamino)-3-methylbenzonitrileYield 21%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a 250 mL, round-bottomed flask equipped with a magnetic stir bar and septum was added N′-((2R,3R)-2-(3-chloro-4-cyano-2-methylphenylamino)-3-hydroxybutanoyl)-4-cyanobenzohydrazide (0.6871 g, 2.4 mmol) followed by addition of anhydrous THF (200 mL) under an atmosphere of nitrogen. To this was then added tosyl chloride (318 mg, 1.7 mmol) followed by addition of polystyrene bound (2-tert-butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine (PS-BEMP) (2.2 mmol/g loading, 2.29 g, 5.0 mmol). This mixture was allowed to stir at room temperature for a period of 16 h. The solids were then filtered off and washed with additional THF (100 mL). The filtrate was then concentrated under reduced pressure to reveal a yellow solid. This was purified via silica gel chromatography eluted with 50% EtOAc/hexanes to provide product as a white solid (138 mg, 21%). 1H NMR (500 MHz, acetone-d6, δ in ppm) 8.19 (AA′XX′, J=8.4 Hz, 2H), 7.98 (AA′XX′, J=8.5 Hz, 2H), 7.48 (d, J=8.6 Hz, 1H), 6.89 (d, J=8.7 Hz, 1H), 5.89 (d, J=8.8 Hz, 1H), 5.11 (dd, J=5.6, 8.8 Hz, 1H), 4.71 (d, J=5.9 Hz, 1H), 4.55 (m, 1H), 2.36 (s, 3H), 1.43 (d, J=6.3 Hz, 3H).

Workup

  1. customTo a 250 mL, round-bottomed flask equipped with a magnetic stir bar
  2. filtrationThe solids were then filtered off
  3. washwashed with additional THF (100 mL)
  4. concentrationThe filtrate was then concentrated under reduced pressure
  5. customThis was purified via silica gel chromatography
  6. washeluted with 50% EtOAc/hexanes

Sources & evidence

ORD record
ord-2cecac9a3005486284777a97fbed4594
Source dataset
uspto-grants-2013_06
Patent number
US08455525B2

Reaction notes

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