6-Methyl-2-(4-methylene-1-piperidyl)-3-nitropyridine → 3-[(6-Methylpyridin-2-yl)ethynyl]-8-pyridin-2-yl-1-oxa-2-azaspiro[4.5]dec-2-ene-8-carbonitrile
Reaction equation
[CH3:1][C:2]1[N:7]=[C:6](N2CCC(=C)CC2)[C:5]([N+]([O-])=O)=[CH:4][CH:3]=1.[N:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[C:24]1([C:40]#[N:41])[CH2:39][CH2:38][C:27]2([CH2:31][C:30]([C:32]#[C:33][Si](C)(C)C)=[N:29][O:28]2)[CH2:26][CH2:25]1>>[CH3:1][C:2]1[N:7]=[C:6]([C:33]#[C:32][C:30]2[CH2:31][C:27]3([CH2:38][CH2:39][C:24]([C:19]4[CH:20]=[CH:21][CH:22]=[CH:23][N:18]=4)([C:40]#[N:41])[CH2:25][CH2:26]3)[O:28][N:29]=2)[CH:5]=[CH:4][CH:3]=1Participants
3
Procedure
The title compound was prepared following the method described for the compound of Example 3, replacing Compound 3c with Compound 48b. The crude was purified by automated flash chromatography (SP1®TM-Biotage; gradient Petroleum ether-EtOAc from 65:35 to 4:6) to give the title compound as yellow oil. Yield: 43.4%.