Formal asymmetric enone aminohydroxylation: organocatalytic one-pot synthesis of 4,5-disubstituted oxazolidinones
作者:David Cruz Cruz、Pedro A. Sánchez-Murcia、Karl Anker Jørgensen
DOI:10.1039/c2cc32385k
日期:——
A formal asymmetricorganocatalytic aminohydroxylation reaction of enones has been achieved via an aziridination-double S(N)2 sequence. As a part of the reaction design, the generated amino alcohol products are isolated as the corresponding oxazolidinones in good yields and excellent stereoselectivities.
Highly Enantioselective Synthesis of 1,2-Amino Alcohol Derivatives via Proline-Catalyzed Mannich Reaction
作者:Benjamin List、Peter Pojarliev、William T. Biller、Harry J. Martin
DOI:10.1055/s-2003-41491
日期:——
Here we report a new catalytic asymmetric synthesis of oxazolidin-2-ones 4 and Cbz-protected 1,2-amino alcohols 5. Our sequence is based on the chemistry of previously unknown 5-acyloxy-oxazolidin-2-ones, which are obtained via proline-catalyzed direct asymmetric three-component Mannich reaction and Baeyer-Villiger oxidation.