ChemInform Abstract: Novel Synthesis of trans-Hydroindenones by Thermal Reaction of α, ω-Bis(diazo)diketones.
Abstract
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ChemInform Abstract
A novel and general cyclization of α,ω-bis(diazo) diketones such as (I) or (III) allows the synthesis of the cycloalkenone derivatives such as (II) and (IV). The most significant feature is the synthesis of unsubstituted trans-hydroindenones, e.g. ( II), which are difficult to prepare on other routes. The reaction of unsymmetrical α,ω-bis(diazo) diketones such as (V) leads to the formation of regioisomeric products such as (VI) and (VII).
