Process for preparing polyenedialdehyde monoacetals
申请人:——
公开号:US20030158427A1
公开(公告)日:2003-08-21
A process for preparing compounds of the formula I
1
is described and entails converting a compound of the formula II
2
by Wittig or Wittig-Horner reaction into a compound of the formula IV,
3
where appropriate converting the compound of the formula IV by hydrolysis of the acetal function and Wittig or Wittig-Horner reaction into a compound of the formula VI
4
and converting the compound of the formula IV or VI in two stages into the compound of the formula I. The radicals R
1
, R
2
and R
6
and k have the meaning indicated in the description. Novel intermediates are also described.