Methanol → 7-Bromo-2-methyl-2-phenylheptan-1-ol

HRID 969044Notes

Reaction equation

HRID 969044 reaction equation
[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([CH3:19])([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)[C:8](OCC)=[O:9].[Li+].[BH4-].CO>C(Cl)Cl>[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([CH3:19])([C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1)[CH2:8][OH:9]

Participants

5

Reactant 3

HCID 887MethanolHCID 4148881Lithium borohydrideHCID 11313415Ethyl 7-bromo-2-methyl-2-phenylheptanoate

Product 1

HCID 113006147-Bromo-2-methyl-2-phenylheptan-1-olYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

According to the procedure given for the synthesis of 206e, 205h (60.0 g, 183 mmol) was reduced with LiBH4 (5.96 g, 274 mmol) and methanol (8.55 g, 269 mmol) in anhydrous CH2Cl2 (390 mL). After the typical workup, crude 206h (51.0 g, 98%) was obtained as a yellowish oil, which was used without further purification for the next step. 1H NMR (CDCl3): δ 7.25-7.08 (m, 5H), 3.64 (d, 1H, J=7.2), 3.50 (d, 1H, J=7.2), 3.35 (t, 2H, J=6 Hz), 1.92-0.95 (m, 9H), 1.28 (s, 3H). 13C NMR (CDCl3): δ 144.77, 128.51, 126.76, 126.21, 72.63, 43.45, 38.37, 34.06, 32.73, 28.96, 23.12, 21.59. HRMS (EI): Calcd for C14H21BrO (M+): 284.0776, found: 284.0787.

Sources & evidence

ORD record
ord-193d3df482ee4972b487ebfe42fc2a6d
Source dataset
uspto-grants-2007_12
Patent number
US07304093B2

Reaction notes

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