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In the Wittig reaction, why do stabilised ylides produce E-alkenes and unstabilised ylides produce Z-alkenes? [duplicate]
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Kevin McCarthy
In the Wittig reaction, why do stabilised ylides produce E-alkenes and unstabilised ylides produce Z-alkenes? [duplicate]
I have given some justification on why unstabilized ylids give Z-alkenes in this answer of mine.
A possible explanation why stabilized ylids show E-selectivity is given in the organic chemistry textbook by Clayden, Warren, Wothers and Greeves on p. 817:
I have given some justification on why unstabilized ylids give Z-alkenes in this answer of mine.
A possible explanation why stabilized ylids show E-selectivity is given in the organic chemistry textbook by Clayden, Warren, Wothers and Greeves on p. 817:
1ed, is generally no longer considered to be correct. Ive written up a summary of the experimental evidence and the currently accepted model for (E)-selectivity: More
I have given some justification on why unstabilized ylids give Z-alkenes in this answer of mine.
A possible explanation why stabilized ylids show E-selectivity is given in the organic chemistry textbook by Clayden, Warren, Wothers and Greeves on p. 817:
I have given some justification on why unstabilized ylids give Z-alkenes in this answer of mine.
A possible explanation why stabilized ylids show E-selectivity is given in the organic chemistry textbook by Clayden, Warren, Wothers and Greeves on p. 817:
More
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