The graph peaks at 80% at pH=5, but the yield stays at 60%+ all the way between pH 3-11. It shows very nice graphs of the relationship between the solution pH and the yield of tropinone isolated from a mixture of acetonedicarboxylic acid, succindialdehyde and methylamine allowed to stand at room temp for 72h. 779-790 (1937) ()Ī section about the Robinson synthesis of tropinone from a review article on alkaloids, prepared under physiological reaction conditions (no exotic catalysts, near neutral pH, etc.). Die Synthese der Tropaalkaloide and des Pseudopelletierins unter physiologischen Bedingungen.Īngewandte Chemie, Vol 50, No. Die Synthese von Naturstoffen, insbesondere von Alkaloiden, unter physiologischen Bedingungen und ihre Bedeutung für die Frage der Entstehung einiger pflanzlicher Naturstoffe in der Zelle
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