2,6-Lutidine → [(3,5-Dichlorobenzyl)oxy](triisopropyl)silane

HRID 1043474Notes

Reaction equation

HRID 1043474 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH2:9][OH:10])[CH:5]=[C:6]([Cl:8])[CH:7]=1.N1C(C)=CC=CC=1C.O([Si:27]([CH:34]([CH3:36])[CH3:35])([CH:31]([CH3:33])[CH3:32])[CH:28]([CH3:30])[CH3:29])S(C(F)(F)F)(=O)=O>C(Cl)Cl.O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:5]=[C:6]([Cl:8])[CH:7]=1)[CH2:9][O:10][Si:27]([CH:34]([CH3:36])[CH3:35])([CH:31]([CH3:33])[CH3:32])[CH:28]([CH3:30])[CH3:29]

Participants

6

Reactant 3

HCID 79372,6-LutidineHCID 432363,5-Dichlorobenzylic alcoholHCID 2724529Triisopropylsilyl trifluoromethanesulfonate

Product 1

HCID 11739096[(3,5-Dichlorobenzyl)oxy](triisopropyl)silaneYield 79%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of (3,5-dichlorophenyl)methanol (10.0 g, 56.5 mmol) in methylene chloride (100 mL) at 0° C. was added 2,6-lutidine (16.4 mL, 141 mmol) followed by triisopropylsilyl triflate (19.7 mL, 73.4 mmol), and was stirred at 0° C. for 2 hours. The reaction was diluted with water and the organic layer was separated, washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified by chromatography on silica gel, eluting with hexane to provide the desired product (14.8 g, 79%). LC/MS: 333 (M+H)+, 1H NMR (CDCl3) δ 7.23 (s, 3H), 4.78 (s, 2H), 1.18 (m, 3H), 1.03 (s, 18H).

Workup

  1. customthe organic layer was separated
  2. washwashed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography on silica gel
  7. washeluting with hexane

Sources & evidence

ORD record
ord-9c302fb4ab2c41969397f669fa46f4f0
Source dataset
uspto-grants-2013_10
Patent number
US08563541B2

Reaction notes

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