Trifluoroacetic acid → (R)-5-(2,6-difluorophenyl)-3-(6-(piperidin-3-yloxy)pyrazin-2-yl)-1H-indole

HRID 1529302Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][CH:13]=[C:12]2[C:18]1[N:23]=[C:22]([O:24][C@@H:25]2[CH2:30][CH2:29][CH2:28][N:27](C(OC(C)(C)C)=O)[CH2:26]2)[CH:21]=[N:20][CH:19]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][CH:13]=[C:12]2[C:18]1[CH:19]=[N:20][CH:21]=[C:22]([O:24][C@@H:25]2[CH2:30][CH2:29][CH2:28][NH:27][CH2:26]2)[N:23]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A glass microwave reaction vessel was charged with (R)-tert-butyl 3-(6-(5-(2,6-difluorophenyl)-1H-indol-3-yl)pyrazin-2-yloxy)piperidine-1-carboxylate (1.91 g, 3.77 mmol) in DCM (10 mL)/TFA (4 mL). The reaction mixture was stirred and heated in a Initiator microwave reactor (Personal Chemistry, Biotage AB, Inc., Uppsala, Sweden) at 80° C. for 15 min, and then the solvent was removed. The residue was purified with RP-HPLC to give (R)-5-(2,6-difluorophenyl)-3-(6-(piperidin-3-yloxy)pyrazin-2-yl)-1H-indole.

Workup

customA glass microwave reaction vessel
customthe solvent was removed
customThe residue was purified with RP-HPLC

Sources & evidence

ORD record: ord-2d3f63ad42754f9a978838662f82e969
Source dataset: uspto-grants-2015_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09090593B2

Reaction notes

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