4-Methylthiophene-2-boronic acid → HCID 59007070, compound

HRID 130442

Reaction equation

Br[C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2[CH:17]=[C:16]([N:18]3[CH2:23][C@H:22]([CH3:24])[NH:21][C@H:20]([CH3:25])[CH2:19]3)[CH:15]=[CH:14][C:13]=2[O:26][CH3:27])(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH3:28][C:29]1[CH:30]=[C:31](B(O)O)[S:32][CH:33]=1.CC(C)([O-])C.[K+]>COCCOC.O.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>[CH3:25][C@H:20]1[NH:21][C@@H:22]([CH3:24])[CH2:23][N:18]([C:16]2[CH:15]=[CH:14][C:13]([O:26][CH3:27])=[C:12]([NH:11][S:8]([C:5]3[CH:6]=[CH:7][C:2]([C:31]4[S:32][CH:33]=[C:29]([CH3:28])[CH:30]=4)=[CH:3][CH:4]=3)(=[O:10])=[O:9])[CH:17]=2)[CH2:19]1

Participants

Conditions

Temperature: 100 °C

Procedure

To a mixture of 4-bromo-N-[5-(cis-3,5-dimethyl-1-piperazinyl)-2-(methyloxy)phenyl]benzenesulfonamide (E106) (100 mg, 0.22 mmol) and (4-methyl-2-thienyl)boronic acid (71 mg, 0.50 mmol) in DME (3 ml) was added potassium tert-butoxide (220 mg, 1.96 mmol) and tetrakis(triphenylphosphine)palladium(0) (15 mg, 0.01 mmol) in water (1 ml) and the resulting mixture stirred in a microwave (set at high absorbance) at 100° C. for 30 minutes. The resulting mixture was then evaporated in vacuo and purified using an SCX cartridge eluting with methanol followed by ammonia (2M in methanol). The appropriate fractions were combined and solvent evaporated in vacuo and the residue purified further by mass directed autoprep HPLC to afford the title compound (E107). MS (ES+) m/e 472 [M+H]+.

Workup

customThe resulting mixture was then evaporated in vacuo
custompurified
washeluting with methanol
customsolvent evaporated in vacuo
customthe residue purified further by mass

Sources & evidence

ORD record: ord-54c353fc63094d949f46eadf9835d2d8
Source dataset: uspto-grants-2008_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07381728B2

Linked notes

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