Trifluoroacetic acid → HCID 57968603, compound

HRID 882773Notes

Reaction equation

HRID 882773 reaction equation
C(OC([N:8]1[CH2:12][C@H:11]([CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH2:10][C@H:9]1[C:20]([N:22]1[CH2:28][CH2:27][CH2:26][N:25]([CH:29]2[CH2:32][CH2:31][CH2:30]2)[CH2:24][CH2:23]1)=[O:21])=O)(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH2:13]([C@H:11]1[CH2:12][NH:8][C@H:9]([C:20]([N:22]2[CH2:28][CH2:27][CH2:26][N:25]([CH:29]3[CH2:32][CH2:31][CH2:30]3)[CH2:24][CH2:23]2)=[O:21])[CH2:10]1)[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 44599402HCID 44599402, compound

Product 1

HCID 57968603HCID 57968603, compoundYield 98.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of (2S,4R)-4-benzyl-2-(4-cyclobutyl-[1,4]diazepane-1-carbonyl)-pyrrolidine-1-carboxylic acid tert-butyl ester (350.8 mg, 0.794 mmol) in CH2Cl2 (2 mL) was treated with TFA (0.5 mL). After 16 h, the mixture was concentrated and the residue was purified by FCC(CH2Cl2 to 10% MeOH/0.1% NH4OH in CH2Cl2) to give the title compound (266.3 mg, 98%). MS (ESI): mass calcd. for C21H31N3O, 341.25; m/z found, 342.3 [M+H]+. 1H NMR (CDCl3): 7.35-7.29 (m, 2H), 7.28-7.22 (m, 1H), 7.16 (d, J=7.9 Hz, 2H), 4.91-4.80 (m, 1H), 4.03-3.38 (m, 4H), 3.20-2.90 (m, 2H), 2.85-2.33 (m, 7H), 2.25-1.56 (m, 11H).

Workup

  1. concentrationthe mixture was concentrated
  2. customthe residue was purified by FCC(CH2Cl2 to 10% MeOH/0.1% NH4OH in CH2Cl2)

Sources & evidence

ORD record
ord-d81e56eaacfd468aa033c7f66455dd08
Source dataset
uspto-grants-2012_08
Patent number
US08236792B2

Reaction notes

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