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Isobutyl chloroformate → Ammonia

HRID 571360
Notes
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Reaction equation

HRID 571360 reaction equation
[CH3:1][O:2][C@H:3]1[C@@H:8]([NH:9][C@@H:10]2[CH2:17][C@H:13]3[CH2:14][NH:15][CH2:16][C@@:12]3([C:18]([N:20]3[CH2:29][CH2:28][C:27]4[N:26]=[CH:25][C:24]([C:30]([F:33])([F:32])[F:31])=[CH:23][C:22]=4[CH2:21]3)=[O:19])[CH2:11]2)[CH2:7][CH2:6][O:5][CH2:4]1.Cl[C:35]([O:37][CH2:38][CH:39]([CH3:41])[CH3:40])=[O:36]>C(Cl)Cl>[NH3:9].[CH3:1][O:2][C@H:3]1[C@@H:8]([NH:9][C@@H:10]2[CH2:17][C@H:13]3[CH2:14][N:15]([C:35]([O:37][CH2:38][CH:39]([CH3:41])[CH3:40])=[O:36])[CH2:16][C@@:12]3([C:18]([N:20]3[CH2:29][CH2:28][C:27]4[N:26]=[CH:25][C:24]([C:30]([F:33])([F:31])[F:32])=[CH:23][C:22]=4[CH2:21]3)=[O:19])[CH2:11]2)[CH2:7][CH2:6][O:5][CH2:4]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 62365Isobutyl chloroformateHCID 86708896((3aR,5R,6aR)-5-(((3S*,4S*)-3-Methoxytetrahydro-2H-pyran-4-yl)amino)octahydro-cyclopenta[c]pyrrol-3a-yl)(3-(trifluoromethyl)-7,8-dihydro-1,6-naphthyridin-6(5H)-yl)methanone

Product 2

HCID 222AmmoniaYield 5%HCID 89928869(3aR,5R,6aR)-Isobutyl 5-(((3S*,4S*)-3-methoxytetrahydro-2H-pyran-4-yl)amino)-3a-(3-(trifluoromethyl)-5,6,7,8-tetrahydro-1,6-naphthyridine-6-carbonyl)hexahydro-cyclopenta[c]pyrrole-2(1H)-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of Example 1 (0.1 g, 0.213 mmol) and TEA (0.12 mL, 0.854 mmol) in DCM (2.6 mL) at 0° C. was added isobutyl chloroformate (0.086 mL, 0.64 mmol). The mixture was stirred at 0° C. for 30 min and at rt overnight. The reaction was quenched by addition of saturated aqueous NaHCO3 solution, extracted with DCM, dried over Na2SO4. Purification by CombiFlash (eluent: 5% methanol in DCM, then 5% 7N NH3 in methanol in DCM) gave the title compound as a white solid. 1H-NMR (400 MHz, CDCl3): δ 0.93 (d, J=6.3 Hz, 6H), 1.57-1.99 (m, 7H), 2.32 (br. s., 1H), 2.74 (br. s., 1H), 3.08-3.56 (m, 10H), 3.56-4.00 (m, 9H), 4.01-4.11 (m, 1H), 4.57-5.07 (m, 2H), 7.70 (br. s., 1H), 8.72 (br. s., 1H); LC/MS: C28H39F3N4O5: m/z 569.3 (M+H).

Workup

  1. customThe reaction was quenched by addition of saturated aqueous NaHCO3 solution
  2. extractionextracted with DCM
  3. dry with materialdried over Na2SO4
  4. customPurification by CombiFlash (eluent

Sources & evidence

ORD record
ord-338c89807cca45ddbb0f1e44ac147e69
Source dataset
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09024017B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes