New dioxy silane, their production process and new aldehyde-α-ethyl-α-halogen, they can enter.

摘要

New dienoxysilanes of the general formula: ##STR1## and new &agr;- halo &agr;-ethylene aldehydes to which they give access, having the general formula: ##STR2## These new compounds constitute important synthesis intermediates opening a new path for access to macrolides such as pyrenophorine, norpyrenophorine or vermiculine.