Dicarbonyl compounds Tebbe reagent

Elaborate organic substrates and dicarbonyl compounds can also be methylenated in high yields with the Tebbe reagent (Table 3.8) [699-702]. Acid chlorides or... 

Since esters and amides are much less reactive than aldehydes and ketones towards the Tebbe reagent 3, chemoselective methylenation of dicarbonyl compounds has been achieved, as illustrated in Scheme 4.6 and in the examples in Table 4.2. 

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