
TY  - JOUR
A1  - Piggott, Matthew J. 
A1  - Wege, Dieter 
T1  - Some Cycloaddition Reactions of 5,8-Dimethoxynaphtho[2,3-<emph type="2">c</emph>]furan-4,9-dione
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1998
VL  - 51
IS  - 9
SP  - 819
EP  - 824
KW  - 
UR  - https://doi.org/10.1071/C98031 
N2  - Methylation of 5,8-dihydroxynaphtho&#91;2,3-c&#93;furan-4,9-dione (5) gave, in addition to the title ether (7), the fragmentation products 4-hydroxy-1,5,8-trimethoxy-3-methylnaphthalene-2-carbaldehyde (8) and its methyl ether (9). Addition of benzyne to (7) afforded mainly the expected &#91;4+2&#93; cycloadduct (15) and minor amounts of adduct (16), derived by addition of (7) to (15), and adduct (19), derived by a homo- or 1,3-addition of benzyne to (15), followed by decarbonylation. Adducts of (7) with 1,4-dihydro-1,4-epoxynaphthalene and dimethyl acetylenedicarboxylate also were prepared. 
ER  -

