The syntheses of 3,3-dimethylenedithioaldehydes carring a CO2R, OTHP or OAc group at the omega-position in lineal five-carbon chains are reported. The dithiolane group makes these compounds substitutes of the corresponding unstable beta-ketoaldehydes as synthetic five-carbon building blocks.
Fischer Indole Synthesis of (β-Oxo)indol-3-yl Ketones Using Protected 1,3-Dicarbonyl Compounds
作者:Luis G. Zepeda、Martha S. Morales-Rios、Pedro Joseph-Nathan
DOI:10.1080/00397919208021139
日期:1992.12
Abstract The condensation products of 4-methoxyphenylhydrazine and 3,3-dimethylenedithio-5-oxyaldehydes undergo Fischercyclization to the corresponding indoles. The carbonyl-protecting group can be removed from the latter with formation of (β-oxo)indol-3-yl ketones.
作者:L. G. Zepeda、H. Cervantes、M. S. Morales-Ríos、P. Joseph-Nathan
DOI:10.1080/00397919108021284
日期:1991.6
The syntheses of 3,3-dimethylenedithioaldehydes carring a CO2R, OTHP or OAc group at the omega-position in lineal five-carbon chains are reported. The dithiolane group makes these compounds substitutes of the corresponding unstable beta-ketoaldehydes as synthetic five-carbon building blocks.