2-Substituted tropones reacted with Fe2(CO)9 or with Fe(CO)5 under irradiation to give iron tricarbonyl complexes coordinated at unsubstituted diene moiety. 2-Bromotropone afforded another iron tricarbonyl complex coordinated at substituted diene as a minor product. 2-Methyl-, 2-phenyl-, and 2-tosyloxytropones yielded di-π-allyl type diiron hexacarbonyl complexes. Furthermore, 2-dialkylaminotropones
Reactions of Trimethylsilyl Cyanide with Tropone, 2-Phenyltropone, and 2-Methoxytropone. Formations of 2-Cyano-1-hydroxytropylidene Derivatives
作者:Katsuhiro Saito、Hisashi Kojima
DOI:10.1246/bcsj.58.1918
日期:1985.7
Reaction of trimethylsilyl cyanide (TMSCN) with tropone and 2-phenyltropone in the presence of a catalytic amount of zinc iodide in dichloromethane afforded silyl ethers of 7-cyano-1,3,5-cycloheptatriene-1-ol (2a) and 2-phenyl-7-cyano-1,3,5-cycloheptatriene-1-ol (2b), respectively. On the other hand, reaction of TMSCN with 2-methoxytropone gave 2-cyanotropone. Upon hydrolysis, 2a, and 2b yielded 2-cyano-1