Abstract
A series of novel thiocarbene complexes of chromium (I-XII) have been obtained in good yields in a one-pot reaction via acetylation of the lithium acylmetallates B in the presence of TMEDA and subsequent thiolysis. The photochemical decarbonylation of ortho-thioanisylcarbene complexes III, VIII and IX leads to cis-tetracarbonylcarbene-(C,S)-chelate complexes XIV-XVI. Carbene annulation of II with 1-hexyne yields naphthol XVII. The pentacarbonyl complexes (with the exception of ortho-substituted aryl compounds) react with 1-diethylaminopropyne to give the pentacarbonyl(diethylamino- E-vinylcarbene) complexes XVIII-XXIII via a highly stereoselective insertioin of the alkyne into the metalcarbene bond.
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