Sulfinyl Homo- and Hetero-Dienes from Sulfenic Acids: An Approach Towards Six-membered Nitrogen Heterocycles in Enantiomerically Pure Form
作者:Maria C. Aversa、Paola Bonaccorsi、Anna Barattucci、Maria C. Bilardo、Placido Giannetto
DOI:10.1055/s-2003-41076
日期:——
Two different synthetic pathways are presented that provide access to enantiopure sulfinyl hydrazones; in both addition of sulfenic acid/unsaturation represents the crucial step of the procedure. The obtained results are discussed in terms of regioselectivity in the formation of α- and/or β-sulfinyl α,β-unsaturated products when sulfenic acids are reacted with substrates showing carbonyl conjugated
提出了两种不同的合成途径,可提供对映体纯亚磺酰腙的途径;在这两种情况下,添加亚磺酸/不饱和度代表了该过程的关键步骤。当次磺酸与显示羰基共轭三键和/或其衍生物的底物反应时,就形成 α-和/或 β-亚磺酰基 α,β-不饱和产物的区域选择性对所得结果进行了讨论。尽管存在结构限制,(RS ,E,E)-2-[(1S)-isoborneol-10-sulfinyl]-2-butenal dimethylhydrazone (6) 在杂 Diels-Alder 中表现为 1-azabuta-1,3-diene与 N-甲基马来酰亚胺反应,产生具有完全内选择性和面部选择性的独特环加合物。