Synthesis of 4-(ω-Aminoalkyl)- or 4-(ω-Lactamiminoalkyl)thiazoles by Ring Chain Transformation of Isothioureas with Lactam Derivatives
作者:Ute Radics、Jürgen Liebscher、Michael Pätzel
DOI:10.1055/s-1992-26197
日期:——
CH-Acidic isothioureas 1 react with lactam acetals 2 at the unsubstituted N-atom as well as at the acidic S-methylene group giving 4-(Ï-aminoalkyl)thiazoles 6. The latter are further transformed to 4-(Ï-lactamiminoalkyl)thiazoles 8, if lactim ethers 3 are used in reactions with isothioureas 1.
CH 酸性异硫脲 1 与内酰胺缩醛 2 在未取代的 N 原子和酸性 S-亚甲基上发生反应,生成 4-(Ï-氨基烷基)噻唑 6。如果使用内酰胺醚 3 与异硫脲类 1 反应,后者会进一步转化为 4-(Ï-内酰胺亚烷基)噻唑 8。