Functionalization of carboxylic anhydrides at α-carbon with hypervalent iodine reagents: One-pot conversion of anhydrides to 2-sulfonyloxycarboxylate esters
The treatment of carboxylic anhydrides with iodine(III) sulfonate reagents at ca. 100°C and esterification of the reaction mixtures with MeOH/TsOH·H2O affords 2-sulfonyloxycarboxylate esters. This is consistent with enolic behavior in the anhyd
Goff, Jeffrey M.,Justik, Michael W.,Koser, Gerald F.
p. 5597 - 5599
(2007/10/03)
Reaction of benzene and benzene with Trimethylsilyl Enol Ethers. A New General Method for α-Sulfonyloxylation of Carbonyl Compounds
Reaction of benzene (1) with trimethylsilyl enol ethers of aromatic ketones 4a-d, alicyclic ketone 7, aliphatic ketone 10, and esters 13a-c in dichloromethane at room temperature gives good yields of α-(tosyloxy)carbonyl compounds 5
Moriarty, Robert M.,Penmasta, Raju,Awasthi, Alok K.,Epa, W. Ruwan,Prakash, Indra
p. 1101 - 1104
(2007/10/02)
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