Toluene → Ethyl 2-tert-butoxy-2-(1-(4-chlorophenyl)-3,4-dimethylnaphthalen-2-yl)acetate

HRID 514123Notes

Reaction equation

Br[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]([C:12]2[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][CH:13]=2)=[C:4]([CH:19]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[C:20]([O:22][CH2:23][CH3:24])=[O:21])[C:3]=1[CH3:30].[CH3:31]B1OB(C)OB(C)O1.C([O-])([O-])=O.[K+].[K+].C1(C)C=CC=CC=1>O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].CCO>[C:26]([O:25][CH:19]([C:4]1[C:3]([CH3:30])=[C:2]([CH3:31])[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]=1[C:12]1[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][CH:13]=1)[C:20]([O:22][CH2:23][CH3:24])=[O:21])([CH3:28])([CH3:27])[CH3:29]

Participants

Conditions

Temperature: 100 °C

Procedure

A suspension of ethyl 2-(4-bromo-1-(4-chlorophenyl)-3-methylnaphthalen-2-yl)-2-tert-butoxyacetate (25 mg, 51 μmol), trimethylboroxine (21 μL, 0.153 mmol), PdCl2(dppf) (3.7 mg, 5.1 μmol), K2CO3 (70 mg, 0.510 mmol), PhMe (500 μL), EtOH (absolute, 250 μL), and H2O (250 μL) was stirred in a sealed vessel at 100° C. for 3 h. The reaction was cooled to 23° C., diluted with H2O and extracted with EtOAc (3×). Combined organic phases were dried (Na2SO4), filtered, and concentrated, giving crude product. (Yield was not found). 1H NMR (400 MHz, CD3OD) δ 8.08 (d, J=8.2 Hz, 1H), 7.48-7.44 (m, 3H), 7.29-7.26 (m, 4H), 5.15 (s, 1H), 4.20-4.12 (m, 2H), 2.65 (s, 3H), 2.55 (s, 3H), 1.21 (t, J=7 Hz, 3H), 1.00 (s, 9H).

Workup

temperatureThe reaction was cooled to 23° C.
extractionextracted with EtOAc (3×)
dry with materialCombined organic phases were dried (Na2SO4)
filtrationfiltered
concentrationconcentrated
customgiving crude product
custom(Yield

Sources & evidence

ORD record: ord-eb50a7aa1d1e4756b1f980f0a877f447
Source dataset: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09102614B2

Reaction notes

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