Triphenylphosphine → HCID 58266538, compound

HRID 1888516Notes

Reaction equation

HRID 1888516 reaction equation
[C:1]1([S:7]([N:10]2[C:14]3[CH:15]=[N:16][C:17]([C:20]#[N:21])=[C:18]([OH:19])[C:13]=3[C:12]3[CH:22]=[C:23]([Br:26])[CH:24]=[N:25][C:11]2=3)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:27]([O:31][C:32]([N:34]1[CH2:38][CH2:37][CH:36](O)[CH2:35]1)=[O:33])([CH3:30])([CH3:29])[CH3:28].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>CN(C=O)C.C(OCC)(=O)C>[C:27]([O:31][C:32]([N:34]1[CH2:38][CH2:37][CH:36]([O:19][C:18]2[C:13]3[C:12]4[CH:22]=[C:23]([Br:26])[CH:24]=[N:25][C:11]=4[N:10]([S:7]([C:1]4[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=4)(=[O:8])=[O:9])[C:14]=3[CH:15]=[N:16][C:17]=2[C:20]#[N:21])[CH2:35]1)=[O:33])([CH3:30])([CH3:28])[CH3:29]

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 44169391-Boc-3-pyrrolidinolHCID 582664728-(Benzenesulfonyl)-12-bromo-3-hydroxy-5,8,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2,4,6,10,12-hexaene-4-carbonitrile

Product 1

HCID 58266538HCID 58266538, compoundYield 58.1%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 9-benzenesulfonyl-3-bromo-5-hydroxy-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile (200 mg, 0.46 mmol), 3-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester (670 mg, 3.56 mmol) and triphenylphosphine (724 mg, 2.76 mmol) in anhydrous DMF (2 mL) was treated dropwise with diethyl azodicarboxylate (0.53 mL, 3.40 mmol) and the mixture stirred at ambient temperature for 3 h then left to stand overnight. The mixture was diluted with ethyl acetate (20 mL) and washed with brine (3×15 mL), dried over magnesium sulfate and concentrated in vacuo. The crude material was purified by flash chromatography (silica, 20 g column, Si-SPE, 0-20% methanol in DCM). Collecting appropriate fractions afforded the title compound (160 mg, 57%). 1H NMR (CDCl3, 400 MHz): 9.57 (s, 1H), 8.76 (d, J=2.3 Hz, 1H), 8.46 (d, J=2.3 Hz, 1H), 8.24-8.23 (m, 1H), 8.23-8.21 (m, 1H), 7.71-7.61 (m, 1H), 7.58-7.45 (m, 2H), 5.88-5.83 (m, 1H), 4.36-4.11 (m, 1H), 3.87-3.36 (m, 2H), 2.48-2.26 (m, 2H), 2.13-2.05 (m, 1H), 1.46 (s, 9H). LCMS (Method B): RT=4.51 min, M+H+=598/600.

Workup

  1. waitthen left
  2. waitto stand overnight
  3. washwashed with brine (3×15 mL)
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe crude material was purified by flash chromatography (silica, 20 g column, Si-SPE, 0-20% methanol in DCM)
  7. customCollecting appropriate fractions

Sources & evidence

ORD record
ord-c06eac92e4d04b8ca10d0e8669aa702c
Source dataset
uspto-grants-2013_08
Patent number
US08501765B2

Reaction notes

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