2-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amine → HCID 44200660, compound

HRID 2388381Notes

Reaction equation

HRID 2388381 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)[C:17]2[CH:22]=[CH:21][C:20]([O:23][CH3:24])=[CH:19][CH:18]=2)=[O:13])[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[C:3]([CH3:29])=[C:4]([NH:10][C@@H:11]([C:12]2[O:13][C:16]([C:17]3[CH:18]=[CH:19][C:20]([O:23][CH3:24])=[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

4

Reactant 2

HCID 35138512-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amine2×HCID 67006527HCID 67006527, compound2×

Product 1

HCID 44200660HCID 44200660, compoundYield 41.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

The crude material from the reaction immediately preceding (Intermediate 2a) N′-((2R,3S)-2-(3-chloro-4-cyano-2-methylphenylamino)-3-hydroxybutanoyl)-4-methoxy benzohydrazide (330 mg, 0.79 mmol) was added to THF (40 mL) and stirred at room temperature. PS-BEMP (1.08 g, 2.37 mmol base) was added to the solution followed by slow addition of p-TSCl (166 mg, 0.87 mmol). The reaction mixture was stirred for 3 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 on silica gel with Hex:EtOAc (6:4) to get the purified product (130 mg, 41%). 1H NMR(500 MHz, Acetone-d6, δ in ppm) 7.93 (d, J=9 Hz, 2H), 7.50 (d, J=9 Hz, 1H), 7.11 (d, J=9 Hz, 2H), 6.87 (d, J=9 Hz, 1H), 5.68 (d, J=9 Hz, 1H), 5.07 (m, 1H), 4.79 (m, 1H), 4.60 (m, 1H), 3.89 (s, 3H), 2.40 (s, 3H), 1.40 (d, J=6 Hz, 3H).

Workup

  1. additionfollowed by slow addition of p-TSCl (166 mg, 0.87 mmol)
  2. stirringThe reaction mixture was stirred for 3 h
  3. filtrationwas filtered off
  4. concentrationthe solution concentrated
  5. customto get the crude material
  6. customThe crude material was chromatographed on silica gel with Hex

Sources & evidence

ORD record
ord-0288a51b439c4c8cb30c935f99a3cbc2
Source dataset
uspto-grants-2012_09
Patent number
US08268872B2

Reaction notes

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