Efficient Homologation of Aldehydes to 2,4,6-Alkatrienals by means of an α-(1,3-Dioxenylallyl)boronate
作者:Reinhard W. Hoffmann、Frank Schäfer、Eckart Haeberlin、Thorsten Rohde、Karsten Körber
DOI:10.1055/s-2000-8720
日期:——
The α-dioxenyl-allylboronate 4 allows the direct conversion of aldehydes into the 7-hydroxy-2,4-dienals (6). The latter compounds can be dehydrated to 2,4,6-alkatrienals 7 by means of the Burgess reagent or methanesulfonyl anhydride/Hünig Base.
α-二氧烯基-烯丙基硼酸盐4可直接将醛转化为7-羟基-2,4-二烯醛(6)。后者化合物可以通过Burgess试剂或甲磺酰酸酐/Hünig碱脱水生成2,4,6-烯烃三烯醛7。