Heterocyclische Chemie auf einen Blick von John A. Joule (Englisch) Taschenbuch
Biography v Abbreviations xii Introduction to Second Edition xiv 1. Pyryliums, Benzopyryliums, Pyrones and Benzopyrones 71 Pyrylium salts 71 Electrophiles 71 Nucleophilic addition 71 Ring-opening reactions of 2H-pyrans 71 Oxygen substituents – pyrones and benzopyrones 73 Ring synthesis of pyryliums from 1,5-diketones 74 Ring synthesis of 4-pyrones from 1,3,5-triketones 75 Ring synthesis of 2-pyrones from 1,3-keto-aldehydes 75 Ring synthesis of 1-benzopyryliums, coumarins and chromones 76 Exercises 77 9.
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