Low-valent titanium reagent prepared in situ from TiCl<sub>4</sub> and Zn was employed to induce the intramolecular coupling of nitro group with carbonyl group
The copper(Ⅰ) catalyzed coupling reaction of substituted propargyl tosylate with propargyl alcohol proceeds smoothly at room temperature to give 2,5-diynyl alc
2-Butoxy-5-fluoro-3H-4-pyrimidone derivatives of D-glucuronic acid having0-glycosidic linkage or N-glycosidic linkage were synthesized and their anticanceractiv