Malonicacid and derivatives have been well-known to undergo monodecarboxylation under relatively mild conditions and have been exclusively used as a C2 synthon. We report herein their new application as a C1 synthon via double decarboxylation promoted by sulfur and dimethyl sulfoxide. In the presence of amines as nucleophiles, a wide range of thioureas and thioamides as well as N-heterocycles were
众所周知,丙二酸及其衍生物在相对温和的条件下进行单脱羧,并专门用作C 2合成子。我们在此报道了它们作为 C 1合成子的新应用,通过硫和二甲亚砜促进的双脱羧作用。在胺作为亲核试剂存在的情况下,在温和的加热条件下,可以以良好至优异的产率获得各种硫脲和硫代酰胺以及N-杂环。
Evaluation of thioamides, thiolactams and thioureas as hydrogen sulfide (H2S) donors for lowering blood pressure
Hydrogen sulfide (H2S) is a biologically important gaseous molecule that exhibits promising protective effects against a variety of pathological processes. For example, it was recognized as a blood pressure lowering agent. Aligned with the need for easily modifiable platforms for the H2S supply, we report here the preparation and the H2S release kinetics from a series of structurally diversified thioamides
A concise approach for the preparation of 5-arylidene-2-imino-4-thiazolidinone derivatives is described. Structurally diverse amines, isothiocyanates, aldehydes, and chloroacetyl chloride were combined under microwaveirradiation to afford new 5-arylidene-2-imino-4-thiazolidinone derivatives. The one-pot synthesis involves the in situ formation of a thiourea followed by reaction with chloroacetyl chloride