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Question: Provide a tutorial for your classmates on the Lombardo Reagent

The Lombardo reaction is used to convert ketones and aldehydes into alkenes using reagents generated from zinc,

dibromomethane, and TiCl4 that react under low temperatures. It is this combination of reagents that make up the

Lombardo reagent. The reaction was discovered in 1982 by Luciano Lombard as a modification of the TakaiNozaki

Methylenation reaction. One of the many benefits of the Lombardo reagent is its ability to selectively form products.


Lombardo Reagents:


General Scheme:


General Mechanism:

LEADING question mechanism.jpg