1,2-Dichloroethane → HCID 87258264, compound

HRID 874250Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][C:10]2([CH2:22][C:21](=[O:23])[C:20]3[C:15](=[CH:16][CH:17]=[C:18](/[CH:24]=[CH:25]/[C:26](O)=[O:27])[CH:19]=3)[O:14]2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.[NH2:43][O:44][CH:45]1[CH2:50][CH2:49][CH2:48][CH2:47][O:46]1>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][C:10]2([CH2:22][C:21](=[O:23])[C:20]3[C:15](=[CH:16][CH:17]=[C:18](/[CH:24]=[CH:25]/[C:26]([NH:43][O:44][CH:45]4[CH2:50][CH2:49][CH2:48][CH2:47][O:46]4)=[O:27])[CH:19]=3)[O:14]2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 0 °C

Procedure

TEA (0.259 ml, 1.86 mmol) was added to solution of (±)-(E)-3-[1′-tert-butoxycarbonyl-4-oxo-spiro(chromane-2,3′-piperidine)-6-yl]-acrylic acid (481 mg, 1.24 mmol) in DCM (15 ml). The mixture was cooled down to 0° C., and EDC (356 mg, 1.86 mmol) and HOBt (251 mg, 1.86 mmol) were added. The mixture was stirred at 0° C. for 2 h, then NH2OTHP (174 mg, 1.49 mmol) was added and the mixture was stirred at RT overnight. The solution was washed with aqueous 5% NaHCO3 solution and brine. The organic layer was then dried over Na2SO4 and evaporated. The crude residue was purified by column chromatography (eluent: DCM/MeOH 98:2) to give (E)-3-[1′-tert-butoxycarbonyl-4-oxo-spiro(chromane-2,3′-piperidine)-6-yl]-N-(tetrahydro-pyran-2-yloxy)-acrylamide (410 mg).

Workup

stirringthe mixture was stirred at RT overnight
washThe solution was washed with aqueous 5% NaHCO3 solution and brine
dry with materialThe organic layer was then dried over Na2SO4
customevaporated
customThe crude residue was purified by column chromatography (eluent: DCM/MeOH 98:2)

Sources & evidence

ORD record: ord-da13325e57294507862bfa324134fa78
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08980877B2

Reaction notes

Loading…