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.