Abstract
The utilization of carbon dioxide in organic synthesis is developing rapidly. From an environmental point of view, carbon dioxide is very attractive as a substitute for organic solvents because it is non-toxic, non-flammable, and easily separable. In addition, carbon dioxide is stable under oxidative or radical conditions, and highly miscible with gases and fluorocarbons. On the other hand, the utilization of carbon dioxide as a renewable Ci building block has been a challenge for synthetic chemists. Especially, application as a phosgene alternative is quite promising. Recent progress in these areas is reviewd.
