作者:Valentin S. Dorokhov、Béatrice Quiclet-Sire、Samir Z. Zard
DOI:10.1021/acs.orglett.2c00855
日期:2022.4.22
by a double radical addition of α,α′-bisxanthyl acetone to an alkene followed by ionic or thermal cleavage of the xanthate groups and acid-catalyzed ring closure. A modification employs α-chloro-α′-xanthyl acetone to give unsymmetrical derivatives. Reductive removal of the sulfur atoms with Raney nickel furnishes long-chain α,ω-diacids, diols, and diamines. Using biosourced alkenes, monomers and polymers
5,5-二硫代螺缩酮是通过将 α,α'-双黄嘌呤丙酮与烯烃进行双自由基加成,然后黄原酸酯基团离子或热裂解和酸催化闭环来制备的。一种改进是使用 α-氯-α'-黄嘌呤丙酮来产生不对称衍生物。用雷尼镍还原去除硫原子提供了长链 α,ω-二酸、二醇和二胺。使用生物来源的烯烃,可以获得单体和聚合物,其中基本上所有的碳都来自生物质。