As a direct strategy for the formation of nine-membered rings from readily available building blocks,cycloaddition reactions have attracted much attention in recent years.N-vinyl-α,β-unsaturated nitro
α-Alkoxy phosphonium salts have been used as the Wittig reagents for the synthesis of enol ethers.1 These salts are usually prepared by reactions of triphenyl-or trialkylphosphine with α–halo ethers2
Biothiols such as cysteine(Cys),homocysteine(Hcy)and glutathione(GSH)play vital roles in a wide range of physiological and pathological processes arising from their biological redox chemistry.
The indeno-coumarins exhibit good medicinal value1 and photochromic properties2 which widely exist in natural products and bioactive substances.Up to now,only Pechmann condensation between indan-1-one
Pyrimidin-2(1H)-ones as one of important organic compounds could be found in nature products,pharmaceutical intermediates and chemical building blocks.1 Up to now,the two-step synthetic method combini
Pyrroles are one of the most prevalent heterocyclic compounds,and are widely present as the basic cores in many natural products,potent pharmaceutical compounds,and a variety of functional materials.
Aryl nitriles are important structural motifs present in various therapeutically significant natural products and marketed drugs.[1] Moreover,nitriles can be easily transformed to a series of function