n-butyllithium in tetrahydrofuran; hexane to a stirred soln. of phosphonium-compd. in THF at 0°C is added a soln. of BuLi in hexane under N2, the mixt. is stirred at room temp. for 1 h and recooled to 0°C, addn. of Sn-compd. and the mixt. is stirred for 12 h, addn. of aq. NH4Cl; extraction with light petroleum, the extract is dried (MgSO4) and evaporated under reduced pressure, purifn. by column chromy. on silica gel (elution with pentane);
参考文献
Verlhac, Jean-Baptiste; Kwon, HeeAn; Pereyre, Michel
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 13 p. 1367 - 1368
1: 2,5-dihydroxy-benzaldehyde With pivaloyl chloride; triethylamine in N,N-dimethyl-formamide T=20°C; 2: 2-iodo-propane With potassium carbonate; caesium carbonate in N,N-dimethyl-formamide T=20°C; 3: triphenyl-methyl-phosphonium iodide Further stages;
