4-Nitrobenzoic Acid → HCID 178525746, compound

HRID 572236Notes

Reaction equation

HRID 572236 reaction equation
[OH:1][C@H:2]1[CH2:7][CH2:6][C@H:5]([N:8]2[C:16](=[O:17])[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[C:9]2=[O:18])[CH2:4][CH2:3]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[N+:38]([C:41]1[CH:49]=[CH:48][C:44]([C:45](O)=[O:46])=[CH:43][CH:42]=1)([O-:40])=[O:39].N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1COCC1>[O:17]=[C:16]1[C:15]2[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=2)[C:9](=[O:18])[N:8]1[C@@H:5]1[CH2:4][CH2:3][C@H:2]([O:1][C:45](=[O:46])[C:44]2[CH:43]=[CH:42][C:41]([N+:38]([O-:40])=[O:39])=[CH:49][CH:48]=2)[CH2:7][CH2:6]1

Participants

6

Reactant 4

HCID 61084-Nitrobenzoic AcidHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 178515017HCID 178515017, compound

Product 1

HCID 178525746HCID 178525746, compoundYield 87%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of trans-2-(4-hydroxy-cyclohexyl)-isoindole-1,3-dione (38 g, 155 mmol), triphenylphosphine (65 g, 248 mmol), and 4-nitrobenzoic acid (41 g, 248 mmol) in 1500 mL of THF was added dropwise diisopropyl azodicarboxylate (50 g, 248 mmol) at room temperature. The reaction mixture was stirred overnight. The solvent was evaporated, and the resulting solid was recrystallized from methanol to afford 53 g (87%) of the title compound as a white solid. 1H NMR (CDCl3): δ 8.40-8.36 (m, 4H), 7.79 (ddd, J=0.12, 0.02, and 0.02 Hz, 4H), 5.39 (s, 1H), 4.37-4.22 (m, 1H), 2.82-2.65 (m, 2H), 2.27-2.16 (m, 2H), 1.84-1.65 (m, 4H).

Workup

  1. customThe solvent was evaporated
  2. customthe resulting solid was recrystallized from methanol

Sources & evidence

ORD record
ord-9babda73c1274f57b7cd29d73340237c
Source dataset
uspto-grants-2015_05
Patent number
US09029401B2

Reaction notes

Loading…