Phosphorus sulfide (P2S5) → HCID 13726306, compound

HRID 247298Notes

Reaction equation

HRID 247298 reaction equation
[Cl:1][CH2:2][CH2:3][CH:4]1[CH2:10][N:9]([CH3:11])[C:8](=O)[C:7]2[CH:13]=[C:14]([F:17])[CH:15]=[CH:16][C:6]=2[O:5]1.P12(SP3(SP(SP(S3)(S1)=S)(=S)S2)=S)=[S:19]>C(#N)C.C1(C)C=CC=CC=1>[Cl:1][CH2:2][CH2:3][CH:4]1[CH2:10][N:9]([CH3:11])[C:8](=[S:19])[C:7]2[CH:13]=[C:14]([F:17])[CH:15]=[CH:16][C:6]=2[O:5]1

Participants

5

Reactant 2

HCID 14817Phosphorus sulfide (P2S5)2×HCID 13726305HCID 13726305, compound

Product 1

HCID 13726306HCID 13726306, compoundYield 125.6%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 6342AcetonitrileSolvent

Procedure

To 1.0 g (0.0039 mole) of 2-(2-chloroethyl)-2,3-dihydro-7-fluoro-4-methyl-1,4-benzoxazepin-5(4H)-one in 30 ml of acetonitrile was added 0.7 g (0.0016 mole) of phosphorus pentasulfide and the reaction mixture heated to reflux. After 2 hr, another 0.4 g (0.009 mole) of phosphorus pentasulfide was added and heating continued for 2 hr. The reaction mixture was diluted with 70 ml of toluene and filtered. The filtrate was washed carefully with 3×50 ml of saturated sodium bicarbonate and 50 ml of water, dried over sodium sulfate, filtered, charcoaled, filtered and concentrated by rotary evaporation. The crude material was recrystallized from diisopropyl ether to give 0.55 g (52%) of yellow crystals, m.p. 135°-137° C.

Workup

  1. temperaturethe reaction mixture heated to reflux
  2. temperatureheating
  3. waitcontinued for 2 hr
  4. filtrationfiltered
  5. washThe filtrate was washed carefully with 3×50 ml of saturated sodium bicarbonate and 50 ml of water
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. filtrationfiltered
  9. concentrationconcentrated by rotary evaporation
  10. customThe crude material was recrystallized from diisopropyl ether

Sources & evidence

ORD record
ord-5a4ff2515a934f8ea023fd97adce0065
Source dataset
uspto-grants-1987_11
Patent number
US04705853

Reaction notes

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