Norbornadiene-Fused Heterocycles: Synthesis of 5,8-Dihydro-5,8-methanophthalazines and Regioselective Ring Cleavage and Skeletal Rearrangement of 6,7-Epoxy-5,6,7,8-tetrahydro-5,8-methanophthalazine 2-Oxides in Trifluoroacetic Acid
5,8-Dihydro-5,8-methanophthalazine, prepared by the reaction of bicyclo[2.2.1]hepta-2,5-diene-2,3-dicarbaldehyde with hydrazine, reacted with MCPBA to give an N-oxide. Further oxidation with MCPBA afforded the corresponding exo-6,7-epoxy derivative. Treatments of the epoxide and its diphenyl-substituted derivative with trifluoroacetic acid gave 6,9-bis(trifluoroacetoxy) derivatives by a regioselective
Syntheses and Spectral Properties of Norbornadiene-Fused Heterocycles: 1,3-Diphenyl-4,7-dihydro-4,7-methanobenzo[<i>c</i>]thiophene, -4,7-methano-2<i>H</i>-isoindole, and -4,7-methanoisobenzofuran
The syntheses of a novel diphenyl-substituted thiophene, pyrrole, and furan fused at the 3- and 4-positions with norbornadiene are described. Structures of these molecules are discussed on the basis of spectral properties by comparison with those of cyclohexene-fused derivatives. Single crystal X-ray structural analysis of the norbornadiene-fused thiophene as well as the PM3 calculations of the related compounds revealed that the bond angles of carbon atoms at the ring-junction of norbornadiene-fused heterocycles are distorted.
介绍了一种新型二苯基取代噻吩、吡咯和呋喃在 3 和 4 位与降冰片二烯融合的合成方法。通过与环己烯融合衍生物的光谱特性进行比较,讨论了这些分子的结构。降冰片二烯融合噻吩的单晶 X 射线结构分析以及相关化合物的 PM3 计算显示,降冰片二烯融合杂环的环连接处碳原子的键角是扭曲的。
Dupont; Germain, Bulletin de la Societe Chimique de France, 1947, p. 526,528
作者:Dupont、Germain
DOI:——
日期:——
Exploitation of solar energy storage systems. Valence isomerization between norbornadiene and quadricyclane derivatives