BIRKOFER, L.;EICHSTAEDT, D., J. ORGANOMET. CHEM., 1986, 307, N 3, 279-284
作者:BIRKOFER, L.、EICHSTAEDT, D.
DOI:——
日期:——
Siliciumorganische verbindungen
作者:Leonhard Birkofer、Dietmar Eichstädt
DOI:10.1016/s0022-328x(00)98952-6
日期:1986.7
By Photoaddition of maleic anhydride to the trimethylsilysubstituted acetylenes (1a-c the trimethylsilylated cyclobut-3-ene-1,2-dicarboxylic acid anhydrides (2a-c are obtained. Hydrolysis of 2a-c leads to the cis-dicarboxylic acids (3a-c, which are esterified with diazomethane to give the dimethyl esters (4a-c. 2a-c are reduced to the silylated 3,4-bis(hydroxymethyl)-cyclobut-1-enes (5a-c. The bicyclic
通过将马来酸酐光加成到三甲基甲硅烷基取代的乙炔(1a-c)上,制得三甲基甲硅烷基化的环丁-3-烯-1,2-二羧酸酐(2a- c。2a -c的水解产生顺式-二羧酸(3a -c)。 ç,其与重氮甲烷酯化,得到二甲基酯(4a-c中。2a-c中被还原为甲硅烷基化3,4-双(羟甲基)-cyclobut -1-烯烃(5A-C 。该双环化合物6A,7A und b是通过5a-c的醚化获得的。