
TY  - JOUR
A1  - Woolhouse, AD 
T1  - 1,3-Dipolar cycloaddition to a 1,4-quinone methide: 2,6-Di-t-butyl-4-methylenecyclohexa-2,5-dienone
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1977
VL  - 30
IS  - 5
SP  - 1145
EP  - 1152
KW  - 
UR  - https://doi.org/10.1071/CH9771145 
N2  - The reactive 1,3-dipoles ethoxycarbonylformonitrile oxide, benzonitrile oxide, diphenylnitrile imine and benzonitrilium 4-nitrobenzylid add to the 4-methylenecyclohexa-2,5-dienone (1) to give the respective 1 : 1 cycloadducts (4a-d). The yields are high and the reactions therefore provide ready access to members of the hetero-spiro[4,5]decatrienone system. Diazomethane, phenyldiazomethane and diphenyldiazomethane also add to the exocyclic methylene moiety of (1) to give only the nitrogen deficient spiro[2,5]octa-4,7-dienones (10a-c). 
ER  -

