Methyleneketenes and methylenecarbenes. III. Pyrolytic synthesis of arylacetylenes and their thermal rearrangements involving arylrnethylenecarbenes
RFC Brown, FW Eastwood, KJ Harrington and GL McMullen
Abstract
Flash vacuum pyrolysis (550-600°) of 5-benzylidene derivatives of 2,2- dimethyl-1,3-dioxan-4,6-dione(isopropylidene malonate) gives
phenylacetylenes bearing m-or p-substituents (H, Me, MeO, Cl, CN)in 64-98% yield.
Australian Journal of Chemistry 27(11) 2391 - 2402
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