Ylides

A neutral dipolar molecule called a ylide or ylids has two formally positively charged heteroatoms (often nitrogen, phosphorus, or sulphur) directly connected, and both atoms have complete octets of electrons. The resulting structure may be thought of as two neighbouring atoms joined by both an ionic and a covalent connection. Ylides are a category of zwitterions and 1,2-dipolar molecules. They show up as reagents or reactive intermediates in organic chemistry. The Wittig reaction, which transforms ketones and in particular aldehydes to alkenes, uses phosphonium ylides. In these Wittig reagents, a phosphorus atom with three phenyl substituents and a link to a carbanion carries the positive charge.

Committee Members
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Dai Yeun Jeong

Dai Yeun Jeong

Asia Climate Change Education Center, Korea, Republic of
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Sergey Suchkov

Sergey Suchkov

N.D. Zelinskii Institute for Organic Chemistry of the Russian Academy of Sciences, Russian Federation
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Enrico Paris

Enrico Paris

CREA-IT & DIAEE, Italy
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Tokeer Ahmad

Tokeer Ahmad

Jamia Millia Islamia, India
CAT 2026 Speakers
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Enrico Paris

Enrico Paris

CREA-IT & DIAEE, Italy
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Jiri Dedecek

Jiri Dedecek

J Heyrovsky Institute of Physical Chemistry , Czech Republic
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Dai Yeun Jeong

Dai Yeun Jeong

Asia Climate Change Education Center, Korea, Republic of
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Osman Adiguzel

Osman Adiguzel

Firat University, Turkey
Speaker at Catalysis, Chemical Engineering & Technology 2026 - Sergey Suchkov

Sergey Suchkov

N.D. Zelinskii Institute for Organic Chemistry of the Russian Academy of Sciences, Russian Federation

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