1,2-Dimethoxyethane → cis-2-benzyl-3a-methyl-6-vinyl-2,3,3a,4,5,9b-hexahydro-1H-benzo[e]isoindole

HRID 1026638Notes

Reaction equation

[CH2:1]([N:8]1[CH2:16][C@H:15]2[C@:10]([CH3:22])([CH2:11][CH2:12][C:13]3[C:20](Br)=[CH:19][CH:18]=[CH:17][C:14]=32)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Na+].[Na+].CO[CH2:31][CH2:32]OC>C(O)C.O>[CH2:1]([N:8]1[CH2:16][C@H:15]2[C@:10]([CH3:22])([CH2:11][CH2:12][C:13]3[C:20]([CH:31]=[CH2:32])=[CH:19][CH:18]=[CH:17][C:14]=32)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 160 °C

Procedure

cis-2-Benzyl-6-bromo-3a-methyl-2,3,3a,4,5,9b-hexahydro-1H-benzo[e]isoindole (0.421 mmol, 150 mg) was dissolved in DME (1 ml) and ethanol (0.5 ml). 2 N sodium carbonate solution (1 ml), tetrakis(triphenylphosphine)Pd(0) (0.021 mmol, 24.32 mg) and 2,4,6-trivinyl-1,3,5,2,4,6-trioxatriborinane-pyridine complex (0.631 mmol, 152 mg) were added and the reaction mixture was heated at 160° C. for 15 minutes in a microwave reactor. The reaction mixture was diluted with water and extracted with DCM (3×). The combined organic extracts were concentrated in vacuo and then purified by silica column chromatography (eluting with 10% EtOAc in heptane) to afford cis-2-benzyl-3a-methyl-6-vinyl-2,3,3a,4,5,9b-hexahydro-1H-benzo[e]isoindole (100 mg), m/z: 304.2 [M+H]+.

Workup

extractionextracted with DCM (3×)
concentrationThe combined organic extracts were concentrated in vacuo
custompurified by silica column chromatography (eluting with 10% EtOAc in heptane)

Sources & evidence

ORD record: ord-815027de40294ab0ba3b067e9f404bdf
Source dataset: uspto-grants-2014_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08729274B2

Reaction notes

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