Sulfuric Acid → HCID 22270723, compound

HRID 133445Notes

Reaction equation

HRID 133445 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=2)[C:9]([CH3:12])(O)[CH3:10])=[CH:4][CH:3]=1.[Cl:21][CH2:22][C:23]#[N:24].S(=O)(=O)(O)[OH:26]>C(O)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=2)[C:9]([NH:24][C:23](=[O:26])[CH2:22][Cl:21])([CH3:12])[CH3:10])=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 1118Sulfuric AcidHCID 7856ChloroacetonitrileHCID 22270422HCID 22270422, compound

Product 1

HCID 22270723HCID 22270723, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
-10 °C

Procedure

To a solution of 3,4-bis(4-chlorophenyl)-2-methyl-2-butanol (Step B, 1.4 g, 4.5 mmol) and chloroacetonitrile (0.57 mL, 9.1 mmol) in acetic acid (0.7 mL) at −10° C. was added concentrated sulfuric acid (0.31 mL, 14 mmol). After stirring at −10° C. for 15 min and room temperature for 2 h, the reaction mixture was poured onto ice (20 g), and the product was extracted with EtOAc (3×20 mL). The combined extracts were washed with brine/saturated aqueous sodium bicarbonate, dried over anhydrous MgSO4, filtered, and concentrated to dryness to give the title compound. 1H NMR (500 MHz, CD3OD): δ 7.19 (ABq, 4H), 7.06 (d, 2H), 6.95 (d, 2H), 3.93 (ABq, 2H), 3.89 (dd, 1H), 3.10 (dd, 1H), 2.99 (dd, 1H), 1.43 (s, 3H), 1.25 (s, 3H). LC-MS: m/e 384 (M+H)+ (3.9 min).

Workup

  1. additionthe reaction mixture was poured onto ice (20 g)
  2. extractionthe product was extracted with EtOAc (3×20 mL)
  3. washThe combined extracts were washed with brine/saturated aqueous sodium bicarbonate
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated to dryness

Sources & evidence

ORD record
ord-7c08192ef2064d14a388d10f81cff920
Source dataset
uspto-grants-2008_06
Patent number
US07390835B2

Reaction notes

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