AbstractDiynes bearing one terminal and one triarylmethyl‐substituted alkyne were converted into complex benzofluorenone derivatives via a one‐pot process involving a gold‐catalyzed step followed by a photocyclization/oxidation. In the first step an N‐oxide was used to position‐selectively generate an α‐oxo carbenoid at the terminal alkyne which after a regioselective 1,6‐carbene transfer along the tethered tritylalkyne and a subsequent aryl 1,2‐shift furnished tetraphenylethylene‐like derivatives. These intermediates were successfully transformed to fluorenones via oxidative photocyclization.magnified image
Reactions of palladium(II) with organic compounds. Part I. Oxidative cyclisation of 3-methyl-3-phenylbut-1-ene and 3,3,3-triphenylpropene
作者:A. J. Bingham、L. K. Dyall、R. O. C. Norman、C. B. Thomas
DOI:10.1039/j39700001879
日期:——
The olefins PhR2C·CH:CH2(R = Ph or Me) undergo oxidative cyclisation to give the corresponding 1,1-disubstituted indenes when treated with palladium(II) acetate in acetic acid at 80°. Evidence is adduced that reaction does not occur via the expected oxypalladation adducts and that little or no carbonium-ion character is generated in the olefinic carbon skeleton during reaction. The probable pathway
Neighboring group participation in the acetolysis of 1,1,1-triaryl-3-diazo-2-propanones. An unprecedented 1,3 shift of an aryl group via a five-membered transition state.
作者:Vittorio Rosnati、M.Luisa Di Vona、Alba Pusino、Antonio Saba
DOI:10.1016/s0040-4039(00)80453-0
日期:1988.1
The acetolysis of diazo ketones 1a,b,c, leads to the corresponding indanones 3a,b,c, and to the rearranged acetates 4a,b,c. The formation of the acetates 4 can be explained in terms of a mechanism involving the same transition state responsible for the ring closure to 3.
Photochemical transformations of small ring heterocyclic systems. LX. Photochemical ring-opening reactions of substituted chromenes and isochromenes
作者:Albert Padwa、Andrew Au、George A. Lee、William Owens
DOI:10.1021/jo00896a033
日期:1975.4
ROSNATI, VITTORIO;DI, VONA M. LUISA;PUSINO, ALBA;SABA, ANTONIO, TETRAHEDRON LETT., 29,(1988) N 33, C. 4193-4196
作者:ROSNATI, VITTORIO、DI, VONA M. LUISA、PUSINO, ALBA、SABA, ANTONIO
DOI:——
日期:——
[EN] INDOLO[3.2.1-JK]CARBAZOLE-6-CARBONITRILE DERIVATIVES AS BLUE FLUORESCENT EMITTERS FOR USE IN OLEDS<br/>[FR] DÉRIVÉS D'INDOLO[3.2.1-JK]CARBAZOLE-6-CARBONITRILE UTILISÉS EN TANT QU'ÉMETTEURS FLUORESCENTS BLEUS DESTINÉS À ÊTRE UTILISÉS DANS DES OLED<br/>[DE] INDOLO[3.2.1-JK]CARBAZOLE-6-CARBONITRIL-DERIVATE ALS BLAU FLUORESZIERENDE EMITTER ZUR VERWENDUNG IN OLEDS
申请人:[de]MERCK PATENT GMBH
公开号:WO2022129116A1
公开(公告)日:2022-06-23
lndolo[3.2.1-jk]carbazole-6-carbonitril-Derivate der Formel (I) als blau fluoreszierende Emitter in organischen Elektrolumineszenzvorrichtungen, insbesondere OLEDs.