Ethanol → tert-butyl N-[4-[3-[2-(hydroxymethyl)-6-methylphenyl]phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

HRID 2215981Notes

Reaction equation

HRID 2215981 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].[CH3:28][C:29]1[C:34]2B(O)[O:36][CH2:37][C:33]=2[CH:32]=[CH:31][CH:30]=1.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>[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:19]=[C:20]([C:34]3[C:33]([CH2:37][OH:36])=[CH:32][CH:31]=[CH:30][C:29]=3[CH3:28])[CH:21]=[CH:22][CH:23]=2)(=[O:17])=[O:16])[CH:14]=1)=[NH:9])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 218861847-Methyl-1,3-dihydro-2,1-benzoxaborol-1-olHCID 145857672tert-butyl N-[4-(3-bromophenyl)sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate2×

Product 1

HCID 145857676tert-butyl N-[4-[3-[2-(hydroxymethyl)-6-methylphenyl]phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamateYield 40%

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)), 7-methyl-3H-benzo[c][1,2]oxaborol-1-ol ((Example 5: step b) 59 mg, 0.4 mmol), Na2CO3 (2M, 0.8 mL, 1.6 mmol), Pd(PPh3)4 (29.4 mg, 0.025 mmol), ethanol (0.8 mL) and toluene (1.6 mL). Analogous aqueous workup and purification of the crude material by preparative TLC (40% EtOAc in hexanes) yielded the title compound (21 mg, 40%) as a light-yellow glass. 1H-NMR (CDCl3): δ 7.96 (m, 2H), 7.86 (m, 1H), 7.54 (m, 1H), 7.43 (m, 1H), 7.18–7.38 (m, 3H), 4.53 (d, 1H, J=13.3 Hz), 4.45 (d, 1H, J=13.3 Hz), 2.54 (s, 3H), 1.96 (s, 3H), 1.49 (s, 9H). ESI-MS (m/z): Calcd. for C25H28N2O5S3: 532.7; found: 532.9.

Workup

  1. customAnalogous aqueous workup and purification of the crude material by preparative TLC (40% EtOAc in hexanes)

Sources & evidence

ORD record
ord-114853b659af44978bb2a46b7d73c36d
Source dataset
uspto-grants-2006_09
Patent number
US07109354B2

Reaction notes

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