Direct Formation of α-Dione blocks from o-Benzoquinone Cycloadditions and their Value in the Synthesis of Fused Quinoxalines, 1,10-Phenanthrolines and Pteridines
Direct Formation of α-Dione blocks from o-Benzoquinone Cycloadditions and their Value in the Synthesis of Fused Quinoxalines, 1,10-Phenanthrolines and Pteridines
Direct Formation of <i>α</i>-Dione blocks from <i>o</i>-Benzoquinone Cycloadditions and their Value in the Synthesis of Fused Quinoxalines, 1,10-Phenanthrolines and Pteridines
作者:Ronald N. Warrener、Martin R. Johnston、Austin C. Schultz、Mirta Golic、Mark A. Houghton、Maxwell J. Gunter
DOI:10.1055/s-1998-3135
日期:1998.6
o-Benzoquinone reacts with norbornadiene to yield a mixture of exo and endo stereoisomeric bridged α-diones which are condensed with vic-diamines (o-phenylenediamines, 5,6-diamino uracil or 5,6-diaminophenanthroline) to produce the corresponding heterocyclic fused-norbornenes; other rod or angled molrac α-dione blocks and heterocycles derived therefrom are described which open new avenues for macrostructure development via block coupling protocols.