Described herein are methods, compositions and kits utilizing heterogeneous metal catalysts for the preparation of cycloaddition compounds, such as triazoles and biomolecules.

This disclosure relates to CO.sub.2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO.sub.2 and H.sub.2S from natural gas.

The present disclosure provides methods for conducting chemical reactions and for conducting a multi-step chemical reactions using swellable organically modified silica (SOMS) as nanoreactors.

This disclosure relates to CO.sub.2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO.sub.2 and H.sub.2S from natural gas.

This disclosure relates to CO.sub.2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO.sub.2 and H.sub.2S from natural gas.

Provided are an imidazo[1,2-a]pyridine-3-carboxylate derivative and a preparation method thereof, and more particularly, a method of effectively preparing an imidazo[1,2-a]pyridine-3-carboxylate derivative by performing an aza-[3+2] cycloaddition reaction of a pyridine derivative with an -diazo oxime ether derivative in the presence of a copper (II) catalyst, and an imidazo[1,2-a]pyridine-3-carboxylate derivative prepared thereby.

Described herein are methods, compositions and kits utilizing heterogeneous metal catalysts for the preparation of cycloaddition compounds, such as triazoles and biomolecules.

Provided are an imidazo[1,2-a]pyridine-3-carboxylate derivative and a preparation method thereof, and more particularly, a method of effectively preparing an imidazo[1,2-a]pyridine-3-carboxylate derivative by performing an aza-[3+2] cycloaddition reaction of a pyridine derivative with an -diazo oxime ether derivative in the presence of a copper (II) catalyst, and an imidazo[1,2-a]pyridine-3-carboxylate derivative prepared thereby.

This disclosure relates to CO.sub.2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO.sub.2 and H.sub.2S from natural gas.

Described herein are methods, compositions and kits utilizing heterogeneous metal catalysts for the preparation of cycloaddition compounds, such as triazoles and biomolecules.