Diisopropylethylamine → 3-cyano-N-{5-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-thiophen-3-ylmethyl}-propionamide

HRID 68571Notes

Reaction equation

HRID 68571 reaction equation
[C:1]([CH2:3][CH2:4][C:5]([OH:7])=O)#[N:2].C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[Cl:50][C:51]1[CH:52]=[C:53]([C:58]2([C:71]([F:74])([F:73])[F:72])[O:62][N:61]=[C:60]([C:63]3[S:67][C:66]([CH3:68])=[C:65]([CH2:69][NH2:70])[CH:64]=3)[CH2:59]2)[CH:54]=[C:55]([Cl:57])[CH:56]=1>ClCCl>[C:1]([CH2:3][CH2:4][C:5]([NH:70][CH2:69][C:65]1[CH:64]=[C:63]([C:60]2[CH2:59][C:58]([C:53]3[CH:54]=[C:55]([Cl:57])[CH:56]=[C:51]([Cl:50])[CH:52]=3)([C:71]([F:73])([F:74])[F:72])[O:62][N:61]=2)[S:67][C:66]=1[CH3:68])=[O:7])#[N:2]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2630863-Cyanopropanoic acidHCID 2724699PyBOPHCID 68293128HCID 68293128, compound

Product 1

HCID 867066493-cyano-N-{5-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-thiophen-3-ylmethyl}-propionamideYield 19.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

3-Cyanopropionic acid (104 mg) and PyBOP (400 mg) are added to a solution of DIPEA (0.36 ml) and C-{5-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-thiophen-3-yl}-methylamine (286 mg, Example 1, step F) in dichloromethane (5 ml). After 4 hours at RT, the reaction is quenched with water. The aqueous phase is separated and further extracted two times with dichloromethane. The organic phases are combined, dried over MgSO4 and concentrated in vacuo. The crude product is purified on a semi-preparative HPLC to yield 3-cyano-N-{5-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-thiophen-3-ylmethyl}-propionamide (compound 1.39, 67 mg) as a beige resin. MS (HPLC/MS): 491 (MH+). Retention time: 1.90 min.

Workup

  1. customthe reaction is quenched with water
  2. customThe aqueous phase is separated
  3. extractionfurther extracted two times with dichloromethane
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe crude product is purified on a semi-preparative HPLC

Sources & evidence

ORD record
ord-f4278cb2efd143fc9619f1856ebad428
Source dataset
uspto-grants-2014_09
Patent number
US08822466B2

Reaction notes

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