Ethyl 4-iodobenzoate → 4-Iodobenzyl alcohol
Reaction equation
C([O:3][C:4](=O)[C:5]1[CH:10]=[CH:9][C:8]([I:11])=[CH:7][CH:6]=1)C.[H-].C([Al+]CC(C)C)C(C)C>ClCCl>[I:11][C:8]1[CH:9]=[CH:10][C:5]([CH2:4][OH:3])=[CH:6][CH:7]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
A stirred, cooled (−78° C.) solution of ethyl-4-iodo-benzoate (available from Lancaster, 12.9 g, 45 mmol) in anhydrous dichloromethane (100 mL) under argon was treated with a 1M solution of di-isobutyl aluminum hydride in dichloromethane (100 mL, 100 mmol). The reaction mixture was allowed to warm to 0° C. in 1.5 h, quenched with saturated aqueous ammonium chloride solution and the resulting emulsion was filtered over a bed of celite. The phases in the filtrate were-separated and the aqueous phase was extracted with dichloromethane (×1). The combined organic phase was dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to afford the title product as a white solid (9 g, 85%).
Workup
- customquenched with saturated aqueous ammonium chloride solution
- filtrationthe resulting emulsion was filtered over a bed of celite
- customThe phases in the filtrate were-separated
- extractionthe aqueous phase was extracted with dichloromethane (×1)
- dry with materialThe combined organic phase was dried over anhydrous sodium sulfate
- filtrationfiltered
- customevaporated in vacuo
Sources & evidence
- ORD record
- ord-5dd84c400938409fa49a8786745b3caa
- Source dataset
- uspto-grants-2007_06
- Patent number
- US07226951B2
Reaction notes
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