Multi-step reaction with 8 steps
1: pyridine / CH2Cl2 / 0 °C
2: 74 percent / PdCl2(Ph3P)2, Et3N / dimethylformamide / 90 °C
3: 88 percent / K2CO3 / methanol / Ambient temperature
4: 34 percent / PdCl2(PPh3)2, Et3N / dimethylformamide / 110 °C
5: 45 percent / pyridinium chloride / 200 °C
6: 75 percent / NaH / dimethylformamide / Ambient temperature
7: 75 percent / NaClO2, NaH2PO4, 2-methyl-2-butene, DMA / H2O / Ambient temperature
8: 2,4,6-triisopropylbezenesulfonyl chloride, DMAP, Et3N / CHCl3 / Ambient temperature
With
pyridine; dmap; bis-triphenylphosphine-palladium(II) chloride; sodium chlorite; sodium dihydrogenphosphate; 2,4,6-triisopropylphenylsulfonyl chloride; 2-methyl-but-2-ene; pyridine hydrochloride; 2,4-dichlorophenoxyacetic acid dimethylamine; sodium hydride; potassium carbonate; triethylamine;
In
methanol; dichloromethane; chloroform; water; N,N-dimethyl-formamide;
DOI:10.1016/S0960-894X(98)00001-8