Stabilized ylides yield trans alkenes in the Wittig reaction

the verdict

COMMON KNOWLEDGE

Legacy classification; evidence review pending

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Is it true that stabilized ylides yield trans alkenes in the Wittig reaction?

That stabilized ylides yield trans (E) alkenes in the Wittig reaction is a standard textbook chemical principle, corroborated by general organic chemistry literature.

Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked 6 Aug 2026

The analysis

The claim is a well-established textbook fact regarding the stereochemical outcome of the Wittig reaction (stabilized ylides give predominantly E/trans-alkenes, whereas non-stabilized ylides give Z-alkenes). While it is foundational chemical knowledge, multiple retrieved papers touch upon Wittig stereoselectivity or E/Z control. Therefore, COMMON_KNOWLEDGE is appropriate, with supportive papers correctly indexed.

What does the evidence say?

Receipt History

first checked06 Aug 2026

judged → COMMON KNOWLEDGE · 006 Aug 2026

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