Cleavage of Isoxazolines with Tricarbonyltris(acetonitrile)molybdenum and Silica Gel. Synthesis of 1-(2-Oxoalkyl)cyclopropanols from lsoxazoline-5-spirocyclopropanes
Previous transition metal-catalyzed synthesis processes of δ-diketones are plagued by the high cost of the rhodium catalyst and harsh reaction conditions. Herein a low-cost, roomtemperature ruthenium catalytic method is developed based on the coupling of α-keto sulfoxoniumylides with cyclopropanols. The mild protocol features a broad substrate scope (47 examples) and a high product yield (up to 99%)
Cleavage of Isoxazolines with Tricarbonyltris(acetonitrile)molybdenum and Silica Gel. Synthesis of 1-(2-Oxoalkyl)cyclopropanols from lsoxazoline-5-spirocyclopropanes
作者:Antonio Guarna、Antonio Guidi、Andrea Goti、Alberto Brandi、Francesco De Sarlo
DOI:10.1055/s-1989-27185
日期:——
An efficient synthesis of 1-(2-oxoalkyl)cyclopropanols [or (1-hydroxycyclopropyl)methyl ketones] from isoxazoline-5-spirocyclopropanes by selective N-O cleavage effected by Mo(CO)3(MeCN)3 and silica gel is described.