We have developed a simple one-step method to synthesize novel supramolecular polysaccharide composite from cellulose (CEL) and dibenzo-18-crown 6 using ceric ammonium nitrate as initiator. The [CEL+DB18C6] composites obtained retain properties of their components, namely superior mechanical strength (from CEL), excellent adsorption capability for heavy metal ions from DB18C6. More importantly,...

Singly occupied molecular orbital (SOMO) activation provides a pathway for asymmetric a-addition to aldehydes. The scope of SOMO activation includes the allylation, enolation, vinylation, styrenation, chlorination, polyene cyclization, and arylation of a range of aldehydes. This union of organocatalysis with single-electron oxidative coupling is an intricate process involving the complex balanc...

Catalytic amount of Ce(IV) as ceric triethylammonium nitrate (CTEAN) in dichloromethane or acetone can bring about an efficient tetrahydropyranylation of different types of alcohols to afford the corrsesponding tetrahydropyranyl ethers in high yields. Deportection of tetrahydropyranyl ethers can also be achieved efficiently in the presence of this catalyst in methanol.