2,3-Dimethylphenylboronic acid → (+/-)-[7-(2,3-Dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate

HRID 2116062Notes

Reaction equation

HRID 2116062 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O:11][CH2:12][CH:13]2[CH2:17][C:16]3[CH:18]=[CH:19][CH:20]=[C:21](Br)[C:15]=3[O:14]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH3:23][C:24]1[C:29]([CH3:30])=[CH:28][CH:27]=[CH:26][C:25]=1B(O)O>>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O:11][CH2:12][CH:13]2[CH2:17][C:16]3[CH:18]=[CH:19][CH:20]=[C:21]([C:25]4[CH:26]=[CH:27][CH:28]=[C:29]([CH3:30])[C:24]=4[CH3:23])[C:15]=3[O:14]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1

Participants

3

Reactant 2

HCID 27733952,3-Dimethylphenylboronic acidHCID 58747572(7-Bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate

Product 1

HCID 86599147(+/-)-[7-(2,3-Dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonateYield 62.8%

Procedure

Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,3-dimethylphenyl)boronic acid (0.294 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.335 g (62%) of (±)-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).

Sources & evidence

ORD record
ord-68e60282babd4e92835440e68b0fd09b
Source dataset
uspto-grants-2008_10
Patent number
US07435837B2

Reaction notes

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