作者:Reinhard W. Hoffmann、Thorsten Rohde、Eckart Haeberlin、Frank Schäfer
DOI:10.1021/ol990944x
日期:1999.12.1
[GRAPHICS]Phenalamide A(2) (Ib) has been synthesized for the first time, The synthesis features the homologation of aldehyde 5 to trienal 3 with the new conjunctive reagent 6 and the formation of amide 14 with the functionalized Horner-Emmons reagent 4.
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.