Dichloromethane → HCID 57001159, compound
Reaction equation
C(N(CC)C(C)C)(C)C.[CH3:10][Si:11]([CH3:18])([CH3:17])[CH2:12][CH2:13][O:14][CH2:15]Cl.C([O:22][CH2:23][CH3:24])(=O)C.[CH3:25][CH2:26][CH2:27][CH2:28][CH2:29]C.Cl[CH2:32][Cl:33]>>[CH3:10][Si:11]([CH2:12][CH2:13][O:14][CH2:15][O:22][CH2:23][C:24]1[CH:25]=[C:26]([CH:27]=[CH:28][CH:29]=1)[CH2:32][Cl:33])([CH3:18])[CH3:17]Participants
Conditions
- Temperature
- 55 °C
Procedure
m-Hydroxymethylbenzyl chloride (19.29 g, 123.2 mmole) and N,N-diisopropylethylamine (43 mL, 246 mmole) in dichloromethane (150 mL) were placed in a 500 mL round bottom flask fitted with a reflux condenser and a dropping funnel. 2-(Trimethylsilyl)ethoxymethyl chloride (32.7 mL, 185 mmol) in dichloromethane (50 mL) was added slowly via the dropping funnel. After the addition was complete, the contents were heated at 55° C. for 18 hours, after which TLC using 1:5 ethyl acetate:hexane indicated completion of the reaction. The dichloromethane solution was cooled to room temperature, washed with water (100 mL) and then dried over anhydrous magnesium sulfate. After filtration and concentration, the residue was chromatographed on silica gel to provide 32.57 g (92% yield) of the desired product. 1H NMR spectral data were as follows: (CDCL3, 300 MHz): δ 7.3 (m, 4H), 4.8 (s, 2H), 4.65 (s, 2H), 4.6 (s, 2H), 3.65 (m, 2H), 1.0 (m, 2H), 0.00 (s,9H).
Workup
- customfitted with a reflux condenser and a dropping funnel
- additionAfter the addition
- washwashed with water (100 mL)
- dry with materialdried over anhydrous magnesium sulfate
- filtrationAfter filtration and concentration
- customthe residue was chromatographed on silica gel
Sources & evidence
- ORD record
- ord-75f16d01d4664a0d90156ae472f60fef
- Source dataset
- uspto-grants-1999_03
- Patent number
- US05877312
Reaction notes
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