Stannane, tributyl(1-ethoxyethenyl)- → 9-(1-Ethoxyvinyl)-3,4,7,8-tetrahydro-[1,4]diazepino[7,1-a]isoquinoline-2,5-dione

HRID 926314Notes

Reaction equation

I[C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH2:4][CH2:5][N:6]1[C:16](=[O:17])[CH2:15][NH:14][C:13](=[O:18])[CH:12]=[C:7]12.C([Sn](CCCC)(CCCC)[C:24]([O:26][CH2:27][CH3:28])=[CH2:25])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>[CH2:27]([O:26][C:24]([C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH2:4][CH2:5][N:6]1[C:16](=[O:17])[CH2:15][NH:14][C:13](=[O:18])[CH:12]=[C:7]12)=[CH2:25])[CH3:28]

Participants

Conditions

Temperature: 150 °C

Procedure

111-1. A mixture of 9-iodo-3,4,7,8-tetrahydro-[1,4]diazepino[7,1-a]isoquinoline-2,5-dione (2.5 g, 7.06 mmol) in dioxane (15 mL) was treated with tributyl(1-ethoxyvinyl)stannane (2.98 mL, 8.82 mmol) and Pd(PPh3)4 (408 mg, 0.35 mmol) under Ar, and the mixture was heated to 150° C. for 90 min in a microwave reactor. The mixture was then filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (SiO2, DCM/MeOH 99:1 to 90:10) gave the title compound (1.20 g) as a beige solid. UPLC-MS: MS 299.2 (M+H+); UPLC rt 0.85 min.

Workup

filtrationThe mixture was then filtered
concentrationthe filtrate concentrated in vacuo
customPurification by flash chromatography (SiO2, DCM/MeOH 99:1 to 90:10)

Sources & evidence

ORD record: ord-3605ac0b793e49ada2f03ad124ab75c1
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09284331B2

Reaction notes

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