Tag «Continuous Flow»

Continuous Flow Stereoselective Synthesis of (S)-Warfarin

It’s only fair to share… Continuous Flow Stereoselective Synthesis of (S)-Warfarin The same catalytic packed-bed reactor was used for the preparation of (S)-warfarin 107 under continuous flow conditions (Scheme ).A solution of 4-OH-coumarin 104, benzalacetone105, and trifluoroacetic acid as a cocatalyst in dioxane was flowed into the reactor containing the polystyrene-supported 9-amino-epi-quinine 122. With a …

Continuous Flow Doebner–Miller Reaction and Isolation Using Continuous Stirred Tank Reactors

It’s only fair to share… Continuous flow Doebner–Miller synthesis of different quinaldines from respective anilines is demonstrated using sulfuric acid as a homogeneous catalyst. The extent of reaction was monitored for various parameters, namely, temperature, residence time, mole ratio of sulfuric acid to substrate, mole ratio of crotonaldehyde to substrate, and so forth. Continuous stirred …