Tributyl(2,3-dihydrofuran-5-yl)stannane → 9-(4,5-dihydrofuran-2-yl)-2-(4-ethyl-1H-imidazol-1-yl)-7,8-dihydro-[1,4]diazepino[7,1-a]isoquinolin-5(4H)-one

HRID 532948Notes

Reaction equation

[CH2:1]([C:3]1[N:4]=[CH:5][N:6]([C:8]2[CH:23]=[C:13]3[C:14]4[C:19]([CH2:20][CH2:21][N:12]3[C:11](=[O:24])[CH2:10][N:9]=2)=[C:18](I)[CH:17]=[CH:16][CH:15]=4)[CH:7]=1)[CH3:2].C([Sn](CCCC)(CCCC)[C:30]1[O:31][CH2:32][CH2:33][CH:34]=1)CCC>O1CCOCC1.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:31]1[CH2:32][CH2:33][CH:34]=[C:30]1[C:18]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:19]=1[CH2:20][CH2:21][N:12]1[C:11](=[O:24])[CH2:10][N:9]=[C:8]([N:6]3[CH:7]=[C:3]([CH2:1][CH3:2])[N:4]=[CH:5]3)[CH:23]=[C:13]12

Participants

Conditions

Temperature: 150 °C

Procedure

111-2. A mixture of 2-(4-ethyl-1H-imidazol-1-yl)-9-iodo-7,8-dihydro-[1,4]diazepino[7,1-a]isoquinolin-5(4H)-one (520 mg, 1.20 mmol), tributyl(4,5-dihydrofuran-2-yl)stannane (864 mg, 2.41 mmol) and Pd(PPh3)4 (70 mg, 0.06 mmol) in dioxane (10 mL) was heated to 150° C. for 1.5 h. The mixture was filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (SiO2, DCM to DCM/MeOH 95:5) afforded the title compound (254 mg) as a beige solid. UPLC-MS: MS 375.3 (M+H+); UPLC rt 0.91 min.

Workup

filtrationThe mixture was filtered
concentrationthe filtrate concentrated in vacuo
customPurification by flash chromatography (SiO2, DCM to DCM/MeOH 95:5)

Sources & evidence

ORD record: ord-a3252791ad5241ec862671d6f610cbe5
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08853203B2

Reaction notes

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