Diisopropylethylamine → {3-(3-Isopropoxy-1,2,4-oxadiazol-5-yl)-5-[4-(trifluoromethoxy)phenyl]piperidin-1-yl}(thiomorpholin-4-yl)methanone

HRID 661286Notes

Reaction equation

[N:1]1([C:7]([N:9]2[CH2:14][CH:13]([C:15]3[CH:20]=[CH:19][C:18]([O:21][C:22]([F:25])([F:24])[F:23])=[CH:17][CH:16]=3)[CH2:12][CH:11]([C:26]([OH:28])=O)[CH2:10]2)=[O:8])[CH2:6][CH2:5][S:4][CH2:3][CH2:2]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.O[N:63]=[C:64]([O:66][CH:67]([CH3:69])[CH3:68])[NH2:65]>CN(C=O)C>[CH:67]([O:66][C:64]1[N:65]=[C:26]([CH:11]2[CH2:12][CH:13]([C:15]3[CH:20]=[CH:19][C:18]([O:21][C:22]([F:25])([F:24])[F:23])=[CH:17][CH:16]=3)[CH2:14][N:9]([C:7]([N:1]3[CH2:2][CH2:3][S:4][CH2:5][CH2:6]3)=[O:8])[CH2:10]2)[O:28][N:63]=1)([CH3:69])[CH3:68]

Participants

Conditions

Temperature: 120 °C

Procedure

To a solution of 500 mg (1.20 mmol) of the carboxylic acid from Example 9A in 15.0 ml of DMF were added, at RT, 545 mg (1.43 mmol) of HATU and 0.46 ml (2.63 mmol) of N,N′-diisopropylethylamine, and the mixture was stirred for 30 min. Subsequently, the mixture was admixed with 565 mg (3.56 mmol; 75% purity) of isopropyl N′-hydroxyimidocarbamate [G. Zinner, G. Nebel, Arch. Pharm. 1970, 303, 385-390] and then stirred at RT for 2 h and at 120° C. for 2 h. The reaction solution was concentrated under reduced pressure and purified directly by means of preparative HPLC. Yield: 344 mg (58% of theory)

Workup

concentrationThe reaction solution was concentrated under reduced pressure
custompurified directly by means of preparative HPLC

Sources & evidence

ORD record: ord-5cfb31ecab954f37a3c47b5d8620318d
Source dataset: uspto-grants-2011_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08084469B2

Reaction notes

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