
%0 Journal Article
%A Dalton, LK 
%A Elmes, BC 
%T 2-Methylenebutyrolactones. I. Monoaryl derivatives
%J Australian Journal of Chemistry
%D 1972/03/01
%V 25
%N 3
%P 625-632
%K 
%R https://doi.org/10.1071/CH9720625
%U https://www.publish.csiro.au/paper/CH9720625 
%X The Mannich reaction of a dialkylamine and formaldehyde with 2-carboxy-   butyrolactones leads directly to isolable 2-methylenebutyrolactones. It is suggested that this happens through a concerted decarboxylation-elimination mechanism. 2-Methylene-3- and -4-phenylbutyrolactones and their cysteine addition products, and 3-methylene-2-oxo-cis-2,3,3a,4,5,9b-hexhydronaphtho[1,2-b]furan and its di-methylamine addition product have been prepared. 3-Oxo-2,3,4,4a,6,6-hexahydro-naphtho[l,2-c]pyridazine has also been synthesized. 
