Ethanol → propan-2-yl 2-methyl-3-[3-[5-[N-[(2-methylpropan-2-yl)oxycarbonyl]carbamimidoyl]-2-methylsulfanylthiophen-3-yl]sulfonylphenyl]benzoate

HRID 723023Notes

Reaction equation

HRID 723023 reaction equation
[C:1]([O:5][C:6](=[O:27])[NH:7][C:8]([C:10]1[S:11][C:12]([S:25][CH3:26])=[C:13]([S:15]([C:18]2[CH:23]=[CH:22][CH:21]=[C:20](Br)[CH:19]=2)(=[O:17])=[O:16])[CH:14]=1)=[NH:9])([CH3:4])([CH3:3])[CH3:2].[CH:28]([O:31][C:32](=[O:49])[C:33]1[CH:38]=[CH:37][CH:36]=[C:35](B2OC(C)(C)C(C)(C)O2)[C:34]=1[CH3:48])([CH3:30])[CH3:29].C([O-])([O-])=O.[Na+].[Na+].C(O)C>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>[CH:28]([O:31][C:32]([C:33]1[C:34]([CH3:48])=[C:35]([C:20]2[CH:21]=[CH:22][CH:23]=[C:18]([S:15]([C:13]3[CH:14]=[C:10]([C:8]([NH:7][C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:27])=[NH:9])[S:11][C:12]=3[S:25][CH3:26])(=[O:17])=[O:16])[CH:19]=2)[CH:36]=[CH:37][CH:38]=1)=[O:49])([CH3:30])[CH3:29]

Participants

7

Reactant 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 695866112-Methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid isopropyl esterHCID 145857672tert-butyl N-[4-(3-bromophenyl)sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate2×

Product 1

HCID 145857657propan-2-yl 2-methyl-3-[3-[5-[N-[(2-methylpropan-2-yl)oxycarbonyl]carbamimidoyl]-2-methylsulfanylthiophen-3-yl]sulfonylphenyl]benzoateYield 49.3%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Procedure

The procedure used in Example 1: step c was followed using {[4-(3-bromo-benzenesulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (Example 27 (50 mg, 0.1 mmol)), 2-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid isopropyl ester ((Example 3: step b) 92 mg, 0.3 mmol), Na2CO3 (2M, 0.4 mL, 0.8 mmol), Pd(PPh3)4 (29.4 mg, 0.025 mmol), ethanol (0.4 mL) and toluene (0.8 mL). Analogous aqueous workup and purification of the crude material by preparative TLC (25% EtOAc in hexanes) yielded the title compound (29 mg, 49%) as a colorless glass. 1H-NMR (CDCl3): δ 7.98 (dt, 1H, J=1.6, 7.6 Hz), 7.93 (m, 2H), 7.79 (t, 1H, J=1.7 Hz), 7.58 (t, 1H, J=7.6 Hz), 7.53 (dt, 1H, J=1.6, 7.6 Hz), 7.36 (s, 1H), 7.30 (d, 1H, J=4.5 Hz), 5.27 (heptet, 1H, J=6.2 Hz), 2.58 (s, 3H), 2.35 (s, 3H), 1.51 (s, 9H), 1.39 (d, 1H, J=6.2 Hz). ESI-MS (m/z): Calcd. for C28H32N2O6S3: 588.8; found: 588.9.

Workup

  1. customAnalogous aqueous workup and purification of the crude material by preparative TLC (25% EtOAc in hexanes)

Sources & evidence

ORD record
ord-e3fbdce666964d0cb9540076722f70be
Source dataset
uspto-grants-2006_11
Patent number
US07138530B2

Reaction notes

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