N-methyl-2-pyrrolidone → HCID 68579778, compound

HRID 2233900Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]([CH:9]=[C:10]([N:12]2[CH2:17][CH2:16][CH:15]([NH:18][C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:14][CH2:13]2)[CH:11]=1)[C:5]([O:7][CH3:8])=[O:6].O1C=[CH:29][CH:28]=[C:27]1P(C1OC=CC=1)C1OC=CC=1.CN1C(=O)CCC1.C([Sn](CCCC)(CCCC)CCCC)C=C>CCOC(C)=O>[CH2:29]([C:2]1[CH:3]=[C:4]([CH:9]=[C:10]([N:12]2[CH2:17][CH2:16][CH:15]([NH:18][C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:14][CH2:13]2)[CH:11]=1)[C:5]([O:7][CH3:8])=[O:6])[CH:28]=[CH2:27]

Participants

Conditions

Temperature: 100 °C

Procedure

Methyl 3-bromo-5-{4-[(tert-butoxycarbonyl)amino]piperidin-1-yl}benzoate (Intermediate 104, 300 mg, 0.73 mmol), tris(dibenzylidineacetone)dipalladium (0) (26 mg, 0.03 mmol), trifurylphosphine (14 mg, 0.06 mmol) were weighed into a flask and placed under argon. NMP (3 ml) was added, followed by the dropwise addition of allyltributyl tin (0.25 ml, 0.80 mmol). The mixture was stirred at 100° C. After 64 h, the mixture was diluted with EtOAc and washed sequentially with water followed by brine. The organic phase was dried over MgSO4 and concentrated to dryness. The crude material was purified by chromatography on silica gel using 25% EtOAc/hexanes to give 174 mg of the title product.

Workup

washwashed sequentially with water
dry with materialThe organic phase was dried over MgSO4
concentrationconcentrated to dryness
customThe crude material was purified by chromatography on silica gel using 25% EtOAc/hexanes

Sources & evidence

ORD record: ord-2d7099f7c9bf4f63bdc8f16684fcfa92
Source dataset: uspto-grants-2010_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07709503B2

Reaction notes

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