6-Methyl-3-benzylidene-5,6-dihydropyran-2,4-diones: Synthesis and diastereoselectivity
作者:Masayuki Sato、Satoshi Sunami、Chikara Kaneko、Shun-ichi Satoh、Toshio Furuya
DOI:10.1016/0957-4166(94)80076-6
日期:1994.9
(S)-6-Methyl-(Z)-3-benzylidene-5,6-dihydropyran-2,4-diones have been synthesized from (S)-6-methyl-5,6-dihydropyran-2,4-dione through Knoevenagel condensation with an arylaldehyde followed by recrystallization from ether. The results of conjugate additions and hetero Diels-Alder reactions of these compounds including an interpretation of the observed diastereoselectivities are described.