Phosgene → HCID 118101199, compound

HRID 708874Notes

Reaction equation

HRID 708874 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([F:58])[C:5]([S:52]([CH:55]([CH3:57])[CH3:56])(=[O:54])=[O:53])=[C:6]([CH2:8][N:9]([CH3:51])[C:10]([CH:12]([NH:24][C:25]2[CH:26]=[C:27]3[C:32](=[C:33]([F:35])[CH:34]=2)[C:31]([N:36]([C:44]([O:46][C:47]([CH3:50])([CH3:49])[CH3:48])=[O:45])[C:37](=[O:43])[O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[N:30][CH:29]=[CH:28]3)[C:13]2[CH:18]=[CH:17][C:16]([C@@H:19]([CH3:22])[CH2:20][OH:21])=[C:15]([CH3:23])[CH:14]=2)=[O:11])[CH:7]=1.[C:59](Cl)(Cl)=[O:60]>C(#N)C.ClCCl>[C:39]([O:38][C:37]([N:36]([C:31]1[C:32]2[C:27](=[CH:26][C:25]([NH:24][C@H:12]3[C:10](=[O:11])[N:9]([CH3:51])[CH2:8][C:6]4[CH:7]=[C:2]([CH:3]=[C:4]([F:58])[C:5]=4[S:52]([CH:55]([CH3:57])[CH3:56])(=[O:53])=[O:54])[NH:1][C:59](=[O:60])[O:21][CH2:20][C@H:19]([CH3:22])[C:16]4[CH:17]=[CH:18][C:13]3=[CH:14][C:15]=4[CH3:23])=[CH:34][C:33]=2[F:35])[CH:28]=[CH:29][N:30]=1)[C:44](=[O:45])[O:46][C:47]([CH3:48])([CH3:49])[CH3:50])=[O:43])([CH3:42])([CH3:40])[CH3:41]

Participants

5

Reactant 2

HCID 6371PhosgeneHCID 131733870HCID 131733870, compound

Product 1

HCID 118101199HCID 118101199, compoundYield 37.9%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

A solution of 20E (123 mg, 0.149 mmol) in acetonitrile (3 mL) and dichloromethane (6 mL) was cooled to 0° C. To this solution was added phosgene (20% in toluene, 0.081 mL, 0.164 mmol). The mixture was stirred at 0° C. for 5 min, and rt for 1 h. The mixture was bubbled with Ar for 10 min to remove excess phosgene. The resulting solution was added dropwise over 3 h via a syringe pump into a solution of TEA (0.208 mL, 1.489 mmol) in CH2Cl2 (260 mL) at rt. The solution was stirred at rt for 16 h. The solvent was concentrated and the crude product was purified by flash chromatography to give a mixture of diastereoisomers (60 mg, 47.3% yield). The diastereoisomers were separated by a prep chiral HPLC to give 20F (22 mg, 0.026 mmol, 37.9% yield).

Workup

  1. waitrt for 1 h
  2. customThe mixture was bubbled with Ar for 10 min
  3. customto remove excess phosgene
  4. stirringThe solution was stirred at rt for 16 h
  5. concentrationThe solvent was concentrated
  6. customthe crude product was purified by flash chromatography
  7. customto give
  8. additiona mixture of diastereoisomers (60 mg, 47.3% yield)
  9. customThe diastereoisomers were separated by a prep chiral HPLC

Sources & evidence

ORD record
ord-1953c9e749d64ab78d8dda716a2b997f
Source dataset
uspto-grants-2015_11
Patent number
US09174974B2

Reaction notes

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