Transannular Enantioselective (3 + 2) Cycloaddition of Cycloalkenone Hydrazones under Brønsted Acid Catalysis
作者:Jana Sendra、Efraim Reyes、Liher Prieto、Elena Fernández、Jose L. Vicario
DOI:10.1021/acs.orglett.1c03190
日期:2021.11.19
Hydrazones derivedfrom cycloalkenones undergo an enantioselective transannular formal (3 + 2) cycloaddition catalyzed by a chiral phosphoric acid. The reaction provides high yields and excellent stereocontrol in the formation of complex adducts with one or two α-tertiary amine moieties at the ring fusion, and these can be converted into very versatile stereodefined decalin- or octahydro-1H-indene-derived