Synthesis and absolute configuration of optically active 2,3-disubstituted 2,3-dihydro-1,3,4-thia-diazoles.
作者:Kouhei TOYOOKA、Yoshiyuki TAKEUCHI、Hiroyuki OHTO、Masayuki SHIBUYA、Seiju KUBOTA
DOI:10.1248/cpb.39.777
日期:——
Optically active 3-substituted 2, 3-dihydro-1, 3, 4-thiadiazoles (2-5) were synthesized by the reaction of aldehyde methylthio(thiocarbonyl)hydrazones (1) and chiral 5-substituted 1, 3-dioxolane-2, 4-diones. The absolute configurations of compounds 2-5 were deduced from their circular dichroism spectra.
通过醛甲硫基(硫代羰基)肼(1)和手性 5 取代的 1,3-二氧戊环-2,4-二酮反应合成了具有光学活性的 3 取代 2,3-二氢-1,3,4-噻二唑(2-5)。化合物 2-5 的绝对构型是从它们的圆二色光谱中推断出来的。