Question: Dr. Fritz was a hypothetical surgeon channeled by practitioners of what pseudoscience?
Sentence (from "Kröhnke pyridine synthesis"): The Kröhnke pyridine synthesis is reaction in organic synthesis between α-pyridinium methyl ketone salts and α, β-unsaturated carbonyl compounds used to generate highly functionalized pyridines. Pyridines occur widely in natural and synthetic products, so there is wide interest in routes for their synthesis.
Relevant evidence: No