One-pot synthesis of R1CH(OSiMe2-t-Bu)CX2CH(OH)R2 (X=Cl, Br) successive addition of two different aldehydes (R1CHO and R2CHO) has been achieved starting from tert-butyldimethylsilyldihalomethyllithium. Treatment of a THF solution of the title carbanion (X=Cl) with p-MeOC6H4CHO or n-BuCHO followed by an addition of HMPA and benzaldehyde gave the corresponding 1,3-diol monosilyl ether in 83% or 45% yield
从一锅开始合成R 1 CH(OSiMe 2 - t -Bu)CX 2 CH(OH)R 2(X = Cl,Br),开始连续添加两种不同的醛(R 1 CHO和R 2 CHO)由叔丁基二甲基甲
硅烷基二卤代
甲基锂制成。用p -MeOC 6 H 4 CHO或n处理标题碳负离子(X = Cl)的THF溶液-BuCHO,然后加入HMPA和
苯甲醛,分别以83%或45%的收率得到相应的1,3
-二醇单甲
硅烷基醚。使用
环氧乙烷代替醛作为第一亲电子试剂,然后加入
苯甲醛,得到1,4
-二醇单甲
硅烷基醚。