2-(Tributylstannyl)furan → HCID 11186544, compound

HRID 2242398Notes

Reaction equation

Br[C:2]1[C:11]2[O:10][CH2:9][C:8]3[CH:12]=[C:13]([OH:16])[CH:14]=[CH:15][C:7]=3[C:6]=2[CH:5]=[C:4]2[CH:17]=[CH:18][C:19]([OH:21])=[CH:20][C:3]=12.C([Sn](CCCC)(CCCC)[C:27]1[O:28][CH:29]=[CH:30][CH:31]=1)CCC>C1(C)C=CC=CC=1.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>[O:28]1[CH:29]=[CH:30][CH:31]=[C:27]1[C:2]1[C:11]2[O:10][CH2:9][C:8]3[CH:12]=[C:13]([OH:16])[CH:14]=[CH:15][C:7]=3[C:6]=2[CH:5]=[C:4]2[CH:17]=[CH:18][C:19]([OH:21])=[CH:20][C:3]=12

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of 7-bromo-5H-dibenzo[c,g]chromene-3,9-diol (450 mg, 1.32 mmol), 2-(tributylstannyl)furan (0.622 ml, 1.97 mmols) and tetrakis(triphenylphosphine)palladium(0) (153 mg, 0.132 mmoles) in toluene (26 ml) is heated at 110° C. with stirring for 23 h. The mixture was filtered through celite, concentrated and purified by reverse-phase preparative HPLC to yield 280 mg (64%) of the title compound as a light brown solid. It is further purified by triturating with CH2Cl2 to yield a gray solid: mp 158-163° C.; 1H NMR (DMSO-d6): δ 5.04 (2H, s), 6.61 (1H, d, J=3.11 Hz), 6.67-6.69 (2H, m), 6.85 (1H, dd, J=8.47 Hz, J=2.33 Hz), 6.95 (1H, dd, J=8.72 Hz, J=2.27 Hz), 6.99 (1H, d, J=1.98 Hz), 7.77 (1H, d, J=8.77 Hz), 7.82 (1H, d, J=8.53 Hz), 7.85 (1H, d, J=1.32 Hz), 8.24 (1H, s), 9.70 (1H, s), 9.75 (1H, s); MS (ESI) m/z 329 (M−H)−, 331 (M+H)+.

Workup

filtrationThe mixture was filtered through celite,
concentrationconcentrated
custompurified by reverse-phase preparative HPLC

Sources & evidence

ORD record: ord-b5001ad43ed04630a8e33130701935a4
Source dataset: uspto-grants-2010_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07671084B2

Reaction notes

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