Dichloromethane → 3-[(8-fluoro-6-methylphenanthridin-5(6H)-yl)sulfonyl]phenol

HRID 2181853Notes

Reaction equation

HRID 2181853 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:13](=[CH:14][CH:15]=1)[C:12]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[N:6]([S:16]([C:19]1[CH:24]=[CH:23][CH:22]=[C:21]([O:25]C)[CH:20]=1)(=[O:18])=[O:17])[CH:5]2[CH3:27].C1CCCCC=1.B(Br)(Br)Br.ClCCl>>[F:1][C:2]1[CH:3]=[C:4]2[C:13](=[CH:14][CH:15]=1)[C:12]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[N:6]([S:16]([C:19]1[CH:20]=[C:21]([OH:25])[CH:22]=[CH:23][CH:24]=1)(=[O:18])=[O:17])[CH:5]2[CH3:27]

Participants

5

Reactant 4

HCID 6344DichloromethaneHCID 8079CyclohexeneHCID 25134Boron tribromideHCID 224822658-Fluoro-5-[(3-methoxyphenyl)sulfonyl]-6-methyl-5,6-dihydrophenanthridine

Product 1

HCID 99763533-[(8-fluoro-6-methylphenanthridin-5(6H)-yl)sulfonyl]phenolYield 77%

Procedure

The title compound was prepared from 8-fluoro-5-[(3-methoxyphenyl)sulfonyl]-6-methyl-5,6-dihydrophenanthridine (0.50 g, 1.3 mmol), cyclohexene (2.4 mL, 24 mmol), and 1 M boron tribromide in dichloromethane (7.8 mL, 7.8 mmol) according to the procedure and in the same manner as described in Example 47, Step b. The crude product was purified by flash column chromatography on silica gel, eluting with a mixture of ethyl acetate-hexane (1:4), followed by trituration from hexane, to yield 3-[(8-fluoro-6-methylphenanthridin-5(6H)-yl)sulfonyl]phenol as a homogeneous solid (0.37 g, 71%), m.p. 161° C.;

Workup

  1. customThe crude product was purified by flash column chromatography on silica gel
  2. washeluting with a mixture of ethyl acetate-hexane (1:4)

Sources & evidence

ORD record
ord-847732f1ef5c41d18951a69d66792943
Source dataset
uspto-grants-2005_05
Patent number
US06894061B2

Reaction notes

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