The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Regio- and enantioselective rhodium-catalyzed addition of 1,3-diketones to allenes: Construction of asymmetric tertiary and quaternary all carbon centers》. Authors are Beck, Thorsten M.; Breit, Bernhard.The article about the compound:2,6-Dimethyl-3,5-heptanedionecas:18362-64-6,SMILESS:CC(C)C(CC(C(C)C)=O)=O).Electric Literature of C9H16O2. Through the article, more information about this compound (cas:18362-64-6) is conveyed.
An unprecedented highly regio- and enantioselective rhodium-catalyzed addition of 1,3-diketones to terminal and 1,1-disubstituted allenes furnishing asym. tertiary and quaternary all-carbon centers is reported. By applying a RhI/phosphoramidite/TFA catalytic system under mild conditions, the desired chiral branched α-allylated 1,3-diketones could be obtained in good to excellent yields, with perfect regioselectivity and in high enantioselectivity. The reaction shows a broad functional-group tolerance on both reaction partners highlighting its synthetic potential.
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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica