Diisobutylaluminum hydride → 1-[2-(4-Fluorophenyl)-4,4-di(hydroxymethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzene

HRID 1598355Notes

Reaction equation

HRID 1598355 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH2:12][C:11]([C:17](OC)=[O:18])([C:13](OC)=[O:14])[CH2:10][C:9]=2[C:21]2[CH:26]=[CH:25][C:24]([S:27]([CH3:30])(=[O:29])=[O:28])=[CH:23][CH:22]=2)=[CH:4][CH:3]=1.CC(C[AlH]CC(C)C)C>C1COCC1>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH2:12][C:11]([CH2:17][OH:18])([CH2:13][OH:14])[CH2:10][C:9]=2[C:21]2[CH:22]=[CH:23][C:24]([S:27]([CH3:30])(=[O:29])=[O:28])=[CH:25][CH:26]=2)=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 14487Diisobutylaluminum hydrideHCID 10342760Dimethyl 3-(4-fluorophenyl)-4-(4-(methylsulfonyl)phenyl)cyclopent-3-ene-1,1-dicarboxylate

Product 1

HCID 100909381-[2-(4-Fluorophenyl)-4,4-di(hydroxymethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzeneYield 95.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Under nitrogen, a solution of 1.01 g (2.34 mmol) of 1-[2-(4-fluorophenyl)-4,4-dicarbomethoxycyclopenten-1-yl]-4-(methylsulfonyl)benzene (prepared in Step 8) in 1.5 mL of THF at -78° C. was treated with 11.6 mL (11.6 mmol) of DIBAL (1.0M in THF). The reaction was stirred at ambient temperature for 1.5 hours, quenched with acetone and aqueous NaOH, extracted with ethyl acetate, dried (MgSO4), and concentrated in vacuo to give 840 mg of crude 1-[2-(4-fluorophenyl)-4,4-di(hydroxymethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzene as a colorless oil: NMR (CDCl3) δ2.82 (d, J=5 Hz, 4H), 3.04 (s, 3H), 3.86 (d, J=5 Hz, 4H), 6.94 (t, J=9 Hz, 2H), 7.11 (dd, J=5 and 9 Hz, 2H), 7.33 (d, J=9 Hz, 2H), 7.77 (d, J=9 Hz, 2H).

Workup

  1. customquenched with acetone and aqueous NaOH
  2. extractionextracted with ethyl acetate
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-1416d0c1f5724a198fa1171d80114072
Source dataset
uspto-grants-1998_04
Patent number
US05736579

Reaction notes

Loading…