Benzo(B)Thiophene-2-Boronic Acid → (4-Benzo[b]thiophen-2-yl-pyridin-2-yl)-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-amine

HRID 730306Notes

Reaction equation

[O:1]1[C:6]2[CH:7]=[CH:8][C:9]([NH:11][C:12]3[CH:17]=[C:16](I)[CH:15]=[CH:14][N:13]=3)=[CH:10][C:5]=2[O:4][CH2:3][CH2:2]1.[S:19]1[C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=2[CH:21]=[C:20]1B(O)O>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.COCCOC>[S:19]1[C:20]([C:16]2[CH:15]=[CH:14][N:13]=[C:12]([NH:11][C:9]3[CH:8]=[CH:7][C:6]4[O:1][CH2:2][CH2:3][O:4][C:5]=4[CH:10]=3)[CH:17]=2)=[CH:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][C:23]1=2

Participants

Conditions

Temperature: 150 °C

Procedure

Following the same procedure described for Example 401(c), the mixture of (2,3-dihydro-benzo[1,4]dioxin-6-yl)-(4-iodo-pyridin-2-yl)-amine (Example 401(b), 75 mg, 0.2 mmol), tetrakis (triphenylphosphine) palladium (0) (Aldrich Chemical Company) (12 mg, 0.011 mmol), benzothiophene-2-boronic acid (Frontier Scientific, Inc.) (45 mg, 0.25 mmol) and 1,2-dimethoxyethane (2 mL) gave, after heated in the Microwave Smith Synthesizer at 150° C. for 10 min and purification on a Biotage 40S column (4:1 hexane:EtOAc), the title compound as a light-yellow solid. MS (ESI, pos. ion) m/z: 361 (M+1). Mp: 154.0-154.1° C.

Workup

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custompurification on a Biotage 40S column (4:1 hexane:EtOAc)

Sources & evidence

ORD record: ord-d345e9f0cfdc432f89e24ab553989f49
Source dataset: uspto-grants-2009_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07582657B2

Reaction notes

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