Benzyl Alcohol → Benzyl 2-(4-(4'-amino-[1,1'-biphenyl]-4-yl)-2-oxabicyclo[2.2.2]octan-1-yl)acetate

HRID 881742Notes

Reaction equation

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][C:11]([C:14]34[CH2:21][CH2:20][C:17]([CH2:22][C:23]([O:25][CH3:26])=[O:24])([CH2:18][CH2:19]3)[O:16][CH2:15]4)=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.C(O)[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>C1(C)C=CC=CC=1.CCOC(C)=O.CC(C)[O-].[Ti+4].CC(C)[O-].CC(C)[O-].CC(C)[O-]>[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[CH:9]=[CH:10][C:11]([C:14]34[CH2:19][CH2:18][C:17]([CH2:22][C:23]([O:25][CH2:26][C:28]5[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=5)=[O:24])([CH2:20][CH2:21]3)[O:16][CH2:15]4)=[CH:12][CH:13]=2)=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 120 °C

Procedure

To a mixture of methyl 2-(4-(4′-amino-[1,1′-biphenyl]-4-yl)-2-oxabicyclo[2.2.2]octan-1-yl)acetate (0.323 g, 0.918 mmol) in toluene (35 ml) was added benzyl alcohol (2.377 ml, 22.95 mmol), titanium(IV) isopropoxide (0.807 ml, 2.75 mmol) and 4 A molecular sieves (5 g, 0.918 mmol). The reaction mixture was heated at 120° C. for 48 hours. The resulting mixture was taken up in EtOAc and filtered. The filtrate was subsequently washed with water, then brine. The organic portion dried over anhydrous sodium sulfate, filtered and concentrated. The residue was purified by flash chromatography (10 to 50% EtOAc/Heptane) to give the title compound after drying (270 mg, yield 68.8% yield). LC/MS, ESI-MS(+) m/z 428.1, RT 1.59 (Condition R).

Workup

filtrationfiltered
washThe filtrate was subsequently washed with water
dry with materialThe organic portion dried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated
customThe residue was purified by flash chromatography (10 to 50% EtOAc/Heptane)

Sources & evidence

ORD record: ord-d3cd2d1fa35640c18b799d7adfdf72a4
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08993619B2

Reaction notes

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