Synthesis of 3-(1-hydroxyalkyl)furan-2(5H)-ones: unexpected substitution reaction in allylic alcohols by bromine
作者:A. Calderon、P. De March、J. Font
DOI:10.1021/jo00229a044
日期:1987.10
CALDERON, A.;FONT, M. J., J. ORG. CHEM., 52,(1987) N 20, 4631-4633
作者:CALDERON, A.、FONT, M. J.
DOI:——
日期:——
Synthesis of 3-(1-hydroxyalkyl)-5H-furan-2-ones: Study of their reaction with halogens
作者:Angel Calderón、Pedro de March、Mustafa el Arrad、Josep Font
DOI:10.1016/s0040-4020(01)86714-4
日期:1994.4
The synthesis of 3-(1-hydroxyalkyl)-5H-furan-2-ones; 4a–c, is reported. The reaction of lactones 4a and 4b with bromine under typical ionic bromination conditions gives as major product the unexpected substitution of the allylic hydroxyl group. Only the less hindered double bond in 4c gives some proportion of the normal addition product. The bromine chloride addition to 4c proceeds with 55% yield,