title: Solvent-Free Benzoin and Stetter Reactions with a Small Amount of NHC Catalyst in the Liquid or Semisolid State.
abstract: The intermolecular or intramolecular asymmetric benzoin reaction was catalyzed by a small amount of N-heterocyclic carbene (NHC) (0.2-1 mol %) under solvent-free conditions. The solvent-free intramolecular asymmetric Stetter reaction also proceeded efficiently with NHC (0.2-1 mol %). In some cases, even solid-to-solid or solid-to-liquid conversions took place with low catalyst loading (0.2-1 mol %).
authors: Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
authors: Tadashi
authors: T
authors: Ema
authors: Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
authors: Yoshiko
authors: Y
authors: Nanjo
authors: Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
authors: Sho
authors: S
authors: Shiratori
authors: Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
authors: Yuta
authors: Y
authors: Terao
authors: Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
authors: Ryo
authors: R
authors: Kimura