Hydrochloric Acid → N2-(benzo[d]thiazol-6-yl)-N4-isopropyl-5-(5-(piperidin-4-ylamino)-1,3,4-oxadiazol-2-yl)pyridine-2,4-diamine

HRID 595427Notes

Reaction equation

HRID 595427 reaction equation
[S:1]1[C:5]2[CH:6]=[C:7]([NH:10][C:11]3[N:16]=[CH:15][C:14]([C:17]4[O:21][C:20]([NH:22][CH:23]5[CH2:28][CH2:27][N:26](C(OC(C)(C)C)=O)[CH2:25][CH2:24]5)=[N:19][N:18]=4)=[C:13]([NH:36][CH:37]([CH3:39])[CH3:38])[CH:12]=3)[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1.Cl>C(Cl)Cl.CCOCC>[S:1]1[C:5]2[CH:6]=[C:7]([NH:10][C:11]3[CH:12]=[C:13]([NH:36][CH:37]([CH3:39])[CH3:38])[C:14]([C:17]4[O:21][C:20]([NH:22][CH:23]5[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]5)=[N:19][N:18]=4)=[CH:15][N:16]=3)[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 89690767Tert-butyl 4-((5-(6-(benzo[d]thiazol-6-ylamino)-4-(isopropylamino)pyridin-3-yl)-1,3,4-oxadiazol-2-yl)amino)piperidine-1-carboxylate

Product 1

HCID 89690939N2-(benzo[d]thiazol-6-yl)-N4-isopropyl-5-(5-(piperidin-4-ylamino)-1,3,4-oxadiazol-2-yl)pyridine-2,4-diamine

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of tert-butyl 4-((5-(6-(benzo[d]thiazol-6-ylamino)-4-(isopropylamino)pyridin-3-yl)-1,3,4-oxadiazol-2-yl)amino)piperidine-1-carboxylate (Example 111) (250 mg, 0.3 mmol) in DCM (10 mL), Ether.HCl (10 mL) was added at −10° C. Stirred the reaction mixture at 0° C. for 30 min. Reaction temperature was slowly brought to room temperature. The reaction mass was concentrated under reduced pressure to dryness. The material obtained was purified by prep. HPLC to afford the title compound, N2-(benzo[d]thiazol-6-yl)-N4-isopropyl-5-(5-(piperidin-4-ylamino)-1,3,4-oxadiazol-2-yl)pyridine-2,4-diamine 1H NMR: 400 MHz, CD3OD: δ 1.37 (d, J=6.40 Hz, 6H), 1.90-2.00 (m, 2H), 2.33-2.37 (m, 2H), 3.20-3.29 (m, 2H), 3.50-3.53 (m, 2H), 3.87-3.93 (m, 2H), 6.28 (s, 1H), 7.63 (dd, J=1.20, 8.40 Hz, 1H), 8.21-8.27 (m, 3H), 9.54 (bs, 1H). LC/MS: Purospher@star RP-18, 4×55 mm, 3 μm; Solvent A=10% ACN: 90% H2O: 20 mM NH4OAc; Solvent B=90% ACN: 10% H2O: 20 mM NH4COOAc; gradient 0-100% B over 1.5 min (3.2 min run time); retention time: 1.277 min; LCMS (ES-API), m/z 451.2 (M−H). HPLC: Sunfire C18 (150×4.6 mm), 3.5 micron; Solvent A=5% ACN: 95% H2O: 0.05% TFA pH=2.5; Solvent B=95% ACN: 5% H2O: 0.05% TFA pH=2.5; gradient 0-100% B over 30 min (36 min run time); Flow rate: 1.0 μL/min; Retention time: 8.965 min; Purity: 98.1%.

Workup

  1. customReaction temperature
  2. customwas slowly brought to room temperature
  3. concentrationThe reaction mass was concentrated under reduced pressure to dryness
  4. customThe material obtained
  5. customwas purified by prep

Sources & evidence

ORD record
ord-06361a7da21f47b69670e27c3ce608de
Source dataset
uspto-grants-2016_01
Patent number
US09242975B2

Reaction notes

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