
TY  - JOUR
A1  - Hamon, DPG 
A1  - Trenerry, VC 
T1  - Cyclopropylidene insertion reactions : 2-methoxy-1,2-dimethylbicyclo[1, 1, 0]butane
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1980
VL  - 33
IS  - 4
SP  - 809
EP  - 821
KW  - 
UR  - https://doi.org/10.1071/CH9800809 
N2  - The syntheses of 1,1-dibromo-2-isopropyl-2-methoxy-3,3- dimethylcyclopropane (12), 1,1-dibromo-2-methoxy-2,3,3- trimethylcyclopropane (11), 1,1-dibromo-2-isopropyl-2- methoxycyclopropane (21), 1,1-dibromo-2-methoxy-3,3- dimethylcyclopropane (29) and 1,1-dichloro-2-methoxy-3,3- dimethylcyclopropane (30) are described. The compounds (12), (21) and (29) give rise to alkoxy allenes on treatment with methyllithium in ether. The major product of the reaction of methyllithium with the dibromide (11) is 2-methoxy-1,2-dimethylbicyclo[1,1,0]butane (26). This is the first example of this class of compound. Treatment of the compound (30) with methyllithium in the presence of hexamethylphosphoramide gave the homologous allene, 2-methoxy-4- methylpenta-2,3-diene (25). 
ER  -

