
TY  - JOUR
A1  - Nunn, EE 
T1  - Ethenyl and ethynyl derivatives of Tricarbonyl(&#951;-cyclobutadiene)iron
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 11
SP  - 2549
EP  - 2552
KW  - 
UR  - https://doi.org/10.1071/CH9762549 
N2  - Tricarbonyl(1-4-&#951;-ethenylcyclobutadiene)iron and a number of its derivatives (3a-d) have been prepared in good yield from tricarbonyl(&#951;- cyclobutadienecarbaldehyde)iron (2) by reaction with methylenetriphenylphosphoranes. Reaction of (E)- and (Z)- tricarbonyl[methyl 2-bromo-3-(&#951;-cyclobutadienyl)propenoate]iron, (3b) and (3c), with potassium t-butoxide gave tricarbonyl[methyl 3- (&#951;- cyclobutadienyl)propynoate]iron (4a) in low yield. Attempts to prepare tricarbonyl(1-4-&#951;-ethynyl-cyclobutadiene)iron (4b) by debromination of tricarbonyl[1-4-&#951;-(2?,2?-dibromoethenyl)cyclobuta-diene]iron(3d) were unsuccessful. 
ER  -

