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Reaktionen von Komplexliganden, XI: Stereoselektivität der Einschiebung von Inaminen in die Chrom‐Carbenkohlenstoff‐Bindung: erster Schritt einer zweistufigen Synthese von Indanon‐ und Indenon‐Derivaten
Author(s) -
Dötz Karl Heinz,
Pruskil Ingrid
Publication year - 1978
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19781110543
Subject(s) - chemistry , carbene , chromium , alkyne , stereoselectivity , medicinal chemistry , thermal decomposition , stereochemistry , polymer chemistry , organic chemistry , catalysis
Reactions of Complex Ligands, XI: Stereoselectivity of the Insertion of Ynamines into the Chromium Carbene Bond: First Step of a Two‐Step Synthesis of Indanone and Indenone Derivatives Pentacarbonyl[methoxymethyl(or phenyl)carbene]chromium ( 1, 2 ) reacts with 1‐(dialkylamino)‐acetylenes ( 3, 4 ) in a stereoselective way to give E ‐ and Z ‐pentacarbonyl(alkenylaminocarbene)‐chromium complexes ( 5 – 7 ) via insertion of the alkyne into the metal‐carbene bond. The thermolysis of pentacarbonyl[(diethylamino)‐ E ‐(β‐methoxy‐α‐methylstyryl)carbene]chromium ( 7a ) in n‐decane results in the formation of the tricarbonylchromium complexes of 2‐methyl‐1‐indenone ( 8 ) and trans ‐3‐methoxy‐2‐methyl‐1‐indanone ( 9 ).