Hydrochloric Acid → HCID 11453691, compound

HRID 1869892Notes

Reaction equation

HRID 1869892 reaction equation
[C:1]([O:5][C:6]([C:8]1[CH:9]=[C:10]([C:22]#[C:23][C:24]2[CH:29]=[CH:28][C:27]([CH2:30][C:31]([O:33]C)=[O:32])=[CH:26][CH:25]=2)[CH:11]=[C:12]2[C:17]=1[O:16][C:15]([CH3:19])([CH3:18])[CH2:14][C:13]2([CH3:21])[CH3:20])=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH-].[Li+].Cl>C(O)C.O1CCCC1.O>[C:1]([O:5][C:6]([C:8]1[CH:9]=[C:10]([C:22]#[C:23][C:24]2[CH:25]=[CH:26][C:27]([CH2:30][C:31]([OH:33])=[O:32])=[CH:28][CH:29]=2)[CH:11]=[C:12]2[C:17]=1[O:16][C:15]([CH3:18])([CH3:19])[CH2:14][C:13]2([CH3:21])[CH3:20])=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 21107210HCID 21107210, compound2×

Product 1

HCID 11453691HCID 11453691, compoundYield 89.2%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of 6-(4-methoxycarbonylmethyl-phenylethynyl)-2,2,4,4-tetramethyl-chroman-8-carboxylic acid tert-butyl ester (Intermediate 53, 0.014 g, 0.03 mmol) in ethanol (0.3 mL), tetrahydrofuran (0.3 mL) and water (0.3 mL) was treated with 1N lithium hydroxide (0.12 mL, 0.12 mmol) and the resulting reaction mixture was stirred at ambient temperature for 3 h. The reaction mixture was neutralized with 2N hydrochloric acid and extracted with ethyl acetate. The organic phase was washed with water and brine, and dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo to afford the title product as a yellow oil (0.012 g, 88%).

Workup

  1. customthe resulting reaction mixture
  2. extractionextracted with ethyl acetate
  3. washThe organic phase was washed with water and brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customevaporated in vacuo

Sources & evidence

ORD record
ord-60437bfb64f4401e9ed5cc9b5d33c96b
Source dataset
uspto-grants-2009_12
Patent number
US07638648B2

Reaction notes

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