
%0 Journal Article
%A Dalton, LK 
%A Elmes, BC 
%A Kolczynski, BV 
%T 2-Methylenebutyrolactones. II. Fluorene and diaryl derivatives
%J Australian Journal of Chemistry
%D 1972/03/01
%V 25
%N 3
%P 633-638
%K 
%R https://doi.org/10.1071/CH9720633
%U https://www.publish.csiro.au/paper/CH9720633 
%X Ethyl sodiomalonate with fluorene-9-spiro-2'-oxiran gave two carboxybutyro-lactones, (2a) and (3a). Fluorene-9-spiro-4'-(2'-methylenebutyrolactone) (3c) and 2-methylene-4,4-diphenylbutyrolactone (6c) have been prepared by the action of diethylamine and formaldehyde on their respective 2-oarboxybutyrolaotones. The reaction of trimethylsulphonium iodide with 4,4'-diethoxybenzophenone gave 2,2-bis(4'-ethoxypheny1)vinyl alcohol (6a) and not the oxiran. 
