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Nonmetal catalyzed insertion reactions of diazocarbonyls to acid derivatives in fluorinated alcohols.

Organic letters (2011-01-21)
Lidia Dumitrescu, Kaouther Azzouzi-Zriba, Danièle Bonnet-Delpon, Benoit Crousse
RÉSUMÉ

The insertion reaction of diazocarbonyls to acids could be performed smoothly in fluorinated alcohols in the absence of metal catalyst. This new procedure allowed the chemoselective preparation of various functionalized compounds such as acyloxyesters, depsipeptides, and sulfonate, phosphonate, or boronate derivatives.

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Ethyl diazoacetate, contains ≥13 wt. % dichloromethane
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