2-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amine → HCID 44200310, compound

HRID 563201Notes

Reaction equation

HRID 563201 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C@H:11]([C@@H:24]([OH:26])[CH3:25])[C:12]([NH:14][NH:15][C:16](=[O:23])[C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=O)[CH:5]=[CH:6][C:7]=1[C:8]#[N:9].CCN(P1(N(C)CCCN1C)=NC(C)(C)C)CC>C1COCC1>[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C@@H:11]([C:12]2[O:23][C:16]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[N:15][N:14]=2)[C@@H:24]([OH:26])[CH3:25])[CH:5]=[CH:6][C:7]=1[C:8]#[N:9]

Participants

4

Reactant 2

HCID 35138512-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amineHCID 67007009HCID 67007009, compound2×

Product 1

HCID 44200310HCID 44200310, compoundYield 29%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

The crude material of N′-((2R,3S)-2-(3-chloro-4-cyanophenylamino)-3-hydroxybutanoyl)benzohydrazide (intermediate 12b) (509 mg, 1.36 mmol) was added to THF (100 mL) stirred at room temperature. PS-BEMP (1.86 g, 4.09 mmol base) was added to the solution followed by slow addition of p-TSCl (286 mg, 1.50 mmol). The reaction mixture was stirred for 2 h and the progress of the reaction was monitored by TLC. After the completion of the reaction, the BEMP reagent was filtered off and the solution concentrated to get the crude material. The crude material was chromatographed with hexanes:EtOAc (6:4) to provide the title compound (140 mg). 1H NMR (500 MHz, CDCl3, δ in ppm) 7.93 (d, J=9 Hz, 2H), 7.54 (m, 1H), 7.46 (m, 3H), 6.83 (s, 1H), 6.65 (d, J=9 Hz, 1H), 5.35 (d, J=9 Hz, 1H), 4.70 (d, J=9 Hz, 1H), 4.62 (m, 1H), 3.30 (d, J=5 Hz, 1H), 1.42 (d, J=6 Hz, 3H).

Workup

  1. additionfollowed by slow addition of p-TSCl (286 mg, 1.50 mmol)
  2. stirringThe reaction mixture was stirred for 2 h
  3. customAfter the completion of the reaction
  4. filtrationthe BEMP reagent was filtered off
  5. concentrationthe solution concentrated
  6. customto get the crude material
  7. customThe crude material was chromatographed with hexanes:EtOAc (6:4)

Sources & evidence

ORD record
ord-02038fc5faad40beb2cdf859aa5ac677
Source dataset
uspto-grants-2011_11
Patent number
US08067448B2

Reaction notes

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