Fragmentation of homoallylic alkoxides. Synthesis of propenyl and 2-methylpropenyl ketones from carboxylic esters
作者:Roger L. Snowden、Bernard L. Muller、Karl H. Schulte-Elte
DOI:10.1016/s0040-4039(00)86824-0
日期:1982.1
An efficient two-step synthesis of propenyl and 2-methylpropenyl ketonesfromcarboxylic esters is described which uses as the key step the fragmentation of a potassium dihomoallylic alkoxide under mild thermolytic conditions.
ε-Functionalized Organolithium Compounds:<i>d</i>
<sup>5</sup>-Reagents in Organic Synthesis
作者:José Barluenga、Covadonga Rubiera、José R. Fernández、Josefa Flórez、Miguel Yus
DOI:10.1055/s-1987-28086
日期:——
Treatment of the commercially available 5-chlorovaleryl chloride with different Grignard reagents and lithium powder leads to the formation of ε-oxidofunctionalized organolithium compounds. These dianions react with a wide variety of electrophilic reagents to afford polyfunctionalized compounds. The organolithium compounds obtained are d 5-reagents (reactivity umpolung).
用不同的格氏试剂和锂粉处理市售的 5-氯戊酰氯,可生成δ-氧化官能化的有机锂化合物。这些二元离子可与多种亲电试剂反应,生成多官能化的化合物。得到的有机锂化合物是 d 5-试剂(反应性 umpolung)。
FUJITA TSUTOMU; WATANABE SHOJI; SUGA KYOICHI; INABA TERUHIKO; TAKAGAWA TE+, J. APPL. CHEM. AND BIOTECHNOL., 1978, 28, NO 12, 882-888
作者:FUJITA TSUTOMU、 WATANABE SHOJI、 SUGA KYOICHI、 INABA TERUHIKO、 TAKAGAWA TE+
DOI:——
日期:——
SUGA KYOICHI; WATANABE SHOJI; FUJITA TSUTOMU; KURAMOCHI TADAO, YUKAGAKU, YUKAGAKU, J. JAR. OIL CHEM. SOS. 1977, 26, NO 12, 792-793