Reactions of ortho-manganated aryl-ketones, aldehydes and amides with alkynes; a new synthesis of inden-1-ols and indenones

Article abstract of DOI:10.1016/0022-328X(89)87157-8

ν²-(2-Acetylphenyl)tetracarbonylmanganese reacts directly in benzene with diphenylacetylene to give 2,3-diphenyl-1-methylinden-1-ol in 97percent yield, while ortho-manganeted N,N-dimethylbenzamide or p-dimethylaminobenzaldehyde react similarly