
%0 Journal Article
%A Baxter, GJ 
%A Brown, RFC 
%A McMullen, GL 
%T Methyleneketenes and methylenecarbenes. IV. Pyrolysis of 5-Heteroarylmethylene-2,2-dimethyl-l,3-dioxan-4,6-diones to give phenolic benzothiophens, benzofurans and indoles
%J Australian Journal of Chemistry
%D 1974/12/01
%V 27
%N 12
%P 2605-2610
%K 
%R https://doi.org/10.1071/CH9742605
%U https://www.publish.csiro.au/paper/CH9742605 
%X The synthetic sequence leading from o-tolualdehyde to 2-naphthol1 has been applied to seven five membered heterocyclic aldehydes bearing adjacent methyl substituents. Flash vacuum pyrolysis of the corresponding 5-heteroarylmethylene-2,2-dimethyl-1,3-dioxan-4,6-diones gave hydroxy derivatives of the benzologous systems benzothiophene, benzofuran, dibenzofuran, indole and carbazole in 54-98% yield. 
