Cooperative Catalysis: Calcium and Camphorsulfonic Acid Catalyzed Cycloisomerization of Diynols

Autor:	Marian Rauser, Meike Niggemann, Sebastian Schroeder
Rok vydání:	2015
Předmět:	Bicyclic molecule Camphorsulfonic acid Organic Chemistry chemistry.chemical_element General Chemistry Calcium Combinatorial chemistry Catalysis chemistry.chemical_compound Cycloisomerization chemistry Propargyl Organic chemistry
Zdroj:	Chemistry (Weinheim an der Bergstrasse, Germany). 21(45)
ISSN:	1521-3765
Popis:	The first transition metal-free cycloisomerization of easily accessible diynols is presented as a novel approach to bicyclic 2H-pyrans. As a one-step protocol, the reaction proceeds in a single reaction cascade by intertwining mechanistic fragments borrowed from transition metal-catalyzed Claisen rearrangment of vinyl ethers with our own work on allenyl/propargyl cation rearrangements and a 6π-oxo-electrocylization. It is enabled by a new cooperative catalytic system that combines a simple Ca(2+) catalyst with camphorsulfonic acid.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec676c7eeb78d2ab16aaa544929b7981 https://pubmed.ncbi.nlm.nih.gov/26403228 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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