Sodium Carbonate → tert-butyl N-[4-[3-(4-ethenylphenyl)phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

HRID 723064Notes

Reaction equation

HRID 723064 reaction equation
[CH:1]([C:3]1[CH:8]=[CH:7][C:6](B(O)O)=[CH:5][CH:4]=1)=[CH2:2].[C:12]([O:16][C:17](=[O:38])[NH:18][C:19]([C:21]1[S:22][C:23]([S:36][CH3:37])=[C:24]([S:26]([C:29]2[CH:34]=[CH:33][CH:32]=[C:31](Br)[CH:30]=2)(=[O:28])=[O:27])[CH:25]=1)=[NH:20])([CH3:15])([CH3:14])[CH3:13].C([O-])([O-])=O.[Na+].[Na+]>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1(C)C=CC=CC=1.CCO>[C:12]([O:16][C:17](=[O:38])[NH:18][C:19](=[NH:20])[C:21]1[S:22][C:23]([S:36][CH3:37])=[C:24]([S:26]([C:29]2[CH:30]=[C:31]([C:6]3[CH:7]=[CH:8][C:3]([CH:1]=[CH2:2])=[CH:4][CH:5]=3)[CH:32]=[CH:33][CH:34]=2)(=[O:28])=[O:27])[CH:25]=1)([CH3:15])([CH3:14])[CH3:13]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27343934-Vinylphenylboronic acidHCID 145857672tert-butyl N-[4-(3-bromophenyl)sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

Product 1

HCID 145857709tert-butyl N-[4-[3-(4-ethenylphenyl)phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamateYield 45%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 21863594Toluene ethanolSolvent

Procedure

Following the procedure outlined in Example 1, step c, reaction of 4-vinyl-phenyl-boronic acid (181 mg, 1.22 mmol), {[4-(3-bromo-benzenesulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (300 mg, 0.61 mmol, as prepared in Example 27, step c), tetrakis(triphenylphosphine)palladium(0) (141 mg, 0.122 mmol, Strem Chemicals, Inc., Newburyport, Mass.), Na2CO3 (2.4 mL, 2M aqueous), and toluene/EtOH mixture (2:1, 7.2 mL) afforded 138 mg (45%) of the title compound as a white glassy solid after SiO2 flash chromatography (1:3 EtOAc/hexanes). 1H-NMR (CDCl3): δ 8.21 (t, 1H, 1.7 Hz), 8.00 (brs, 1H), 7.92–7.95 (m, 1H), 7.79–7.81 (m, 1H), 7.48–7.58 (m, 5H), 6.75 (dd, 1H, J=17.7, 10.9 Hz), 5.82 (d, 1H, J=17.5), 5.31 (d, 1H, J=10.9 Hz), 2.54 (s, 3H), 1.50 (s, 9H).

Sources & evidence

ORD record
ord-da3db3285aec4374a1bc6ca17d2772c5
Source dataset
uspto-grants-2006_11
Patent number
US07138530B2

Reaction notes

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