作者:Leonardo Di Nunno、Antonio Scilimati、Paola Vitale
DOI:10.1016/j.tet.2005.01.049
日期:2005.3
Alkyllithiums react with 3-phenylisoxazole giving C5–H abstraction followed either mainly by ring fragmentation to benzonitrile and ethynolate ion (in the case of t-BuLi) or (less hindered alkyllithiums: n-BuLi, EtLi, MeLi) also by formation of alkylated enaminones. Appreciable amounts of 2-alkyl-4,6-diphenylpyrimidines have also been isolated for certain alkyllithiums (EtLi and MeLi). This is at variance
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.