Triphenylphosphine → tert-Butyl 4-(4-{[(5-chloro-2-thienyl)carbonyl]amino}-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)tetrahydro-1(2H)-pyridinecarboxylate

HRID 1455680Notes

Reaction equation

HRID 1455680 reaction equation
N(C(OCC)=O)=NC(OCC)=O.[Cl:13][C:14]1[S:18][C:17]([C:19]([NH:21][C:22]2[CH:30]=[CH:29][CH:28]=[C:27]3[C:23]=2[C:24](=[O:32])[NH:25][C:26]3=[O:31])=[O:20])=[CH:16][CH:15]=1.O[CH:34]1[CH2:39][CH2:38][N:37]([C:40]([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])=[O:41])[CH2:36][CH2:35]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1>[Cl:13][C:14]1[S:18][C:17]([C:19]([NH:21][C:22]2[CH:30]=[CH:29][CH:28]=[C:27]3[C:23]=2[C:24](=[O:32])[N:25]([CH:34]2[CH2:39][CH2:38][N:37]([C:40]([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])=[O:41])[CH2:36][CH2:35]2)[C:26]3=[O:31])=[O:20])=[CH:16][CH:15]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 643502Tert-butyl 4-hydroxypiperidine-1-carboxylateHCID 41357405-Chloro-N-(1,3-dioxo-2,3-dihydro-1H-isoindol-4-yl)thiophene-2-carboxamide

Product 1

HCID 18440735tert-Butyl 4-(4-{[(5-chloro-2-thienyl)carbonyl]amino}-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)tetrahydro-1(2H)-pyridinecarboxylate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

At room temperature, 0.12 ml (0.76 mmol) of diethyl azodicarboxylate (DEAD) is added dropwise to a suspension of 150 mg (0.49 mmol) of 5-chloro-N-(1,3-dioxo-2,3-dihydro-1H-isoindol-4-yl)-2-thiophenecarboxamide, 148 mg (0.73 mmol) of tert-butyl 4-hydroxytetrahydro-1(2H)-pyridinecarboxylate and 199 mg (0.76 mmol) of triphenylphosphine in 1.95 ml of absolute THF. After 2 h at room temperature, the mixture is concentrated and the residue is separated by chromatography on silica gel (dichloromethane/methanol mixture) and the product is isolated. Yield: 184 mg (76.8% of theory); MS (LC-MS): m/z (%)=279 (M+H, 100); LC-MS (Method 4): rt (%)=3.88 (98.9).

Workup

  1. concentrationthe mixture is concentrated
  2. customthe residue is separated by chromatography on silica gel (dichloromethane/methanol mixture)
  3. customthe product is isolated

Sources & evidence

ORD record
ord-b19c7f0a7e4c4d519a83bb96e40100d7
Source dataset
uspto-grants-2009_01
Patent number
US07482472B2

Reaction notes

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