Photoinduced reactions of Cr(CO)(3)-coordinated N-cyanoazepine: [6+4] cycloaddition with conjugated dienes

Morkan, İzzet AmourUztetik-Morkan, Ayşe2021-06-232021-06-2320030340-4285https://doi.org/10.1023/A:1022906019863https://hdl.handle.net/20.500.12491/5501The tricarbonyl(N-cyanoazepine)chromium(0) complex (2) is formed when (MeCN)(3)Cr(CO)(3) is treated photochemically with N-cyanoazepine (1). U.v photolysis of Cr(CO)(3)(eta(6)-N-cyanoazepine)chromium(0) (2) and conjugated dienes [1,3-butadiene (3), trans-1,3-pentadiene (4), trans,trans-2,4-hexadiene (5)] in PhMe give the [6+4]cycloadducts, tricarbonyl{eta(4:2)-11-N-cyano-11-azabicyclo[4.4.1]-undeca-2,4,8-triene}chromium(0) complexes (6-8). The pi-complex (2) and these new bicyclic compounds (6-8) were purified by chromatography, recrystallized, isolated as analytically pure crystalline solids in moderate yields and characterized by mass, i.r. and n.m.r. spectroscopy. The heterobicyclotrienes, 11-N-cyano-11-azabicyclo[4.4.1]undeca-2,4,8-triene (9-11), were isolated from the complexes (6-8) by heating in PhMe, and their structures were assigned by the same spectroscopic methods.eninfo:eu-repo/semantics/closedAccessN-cyanoazepineCr(CO)(3)-coordinatedPhotoinducedPhotoinduced reactions of Cr(CO)(3)-coordinated N-cyanoazepine: [6+4] cycloaddition with conjugated dienesArticle10.1023/A:10229060198632821821862-s2.0-0038642054Q2WOS:000181851800010Q3