Tri-o-tolylphosphine → Methyl 2-acetylamino-3-(4-benzyloxy-3,5-dimethyl-phenyl)-acrylate

HRID 1725735Notes

Reaction equation

[CH2:1]([O:8][C:9]1[C:14]([CH3:15])=[CH:13][C:12](Br)=[CH:11][C:10]=1[CH3:17])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:18]([NH:21][C:22](=[CH2:27])[C:23]([O:25][CH3:26])=[O:24])(=[O:20])[CH3:19].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(N(CC)CC)C.C(#N)C.CC([O-])=O.CC([O-])=O.[Pd+2]>[C:18]([NH:21][C:22](=[CH:27][C:12]1[CH:13]=[C:14]([CH3:15])[C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[C:10]([CH3:17])[CH:11]=1)[C:23]([O:25][CH3:26])=[O:24])(=[O:20])[CH3:19]

Participants

Conditions

Temperature: 80 °C

Procedure

Under a nitrogen atmosphere a mixture of 40.0 g (137 mmol) 2-benzyloxy-5-bromo-1,3-dimethylbenzene and 24.1 g (165 mmol) methyl 2-acetylamino-acrylate in 420 mL triethylamine and 200 mL acetonitrile was combined with 3.5 g (11.2 mmol) tri-o-tolyl-phosphane and 2.5 g (11.1 mmol) Pd(OAc)2 and the mixture was stirred for 18 h at 80° C. The precipitate was suction filtered, the filtrate was evaporated down i. vac. and combined with 800 mL DCM and 800 mL water. The organic phase was separated off, suction filtered through Na2SO4, the solvent was removed i.vac., the residue was stirred with EtOAc, suction filtered and dried i. vac.

Workup

filtrationfiltered
customthe filtrate was evaporated down i
customThe organic phase was separated off
filtrationsuction filtered through Na2SO4
customthe solvent was removed i.vac
stirring, the residue was stirred with EtOAc, suction
filtrationfiltered
customdried i

Sources & evidence

ORD record: ord-24eb6bed069a4d6f9a0e173e80b8d58a
Source dataset: uspto-grants-2009_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07491717B2

Reaction notes

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