Cycloaddition reactions of cycloimmonium ylides with triphenylcyclopropene
作者:Kiyoshi Matsumoto、Takane Uchida
DOI:10.1039/p19810000073
日期:——
course of the reaction is discussed qualitatively. The pyrazinium dicyanomethylide (16) with TPP produces the 7-azaindolizine (19), whereas pyridazinium (17) and phthalazinium (18) dicyanomethylides give the primary adducts (20) and (21), respectively. Reaction of pyridinium bis(alkoxycarbonyl)methylides (22) with TPP gives, however, generally poor or no yield of the indolizines.
MATSUMOTO KIYOSHI; UCHIDA TAKANE, J. CHEM. SOC. PERKIN TRANS., PART 1, 1981, NO 1, 73-77
作者:MATSUMOTO KIYOSHI、 UCHIDA TAKANE
DOI:——
日期:——
Light-Induced Generation and Cycloaddition Reactions of Benzyne: Synthesis of Naphthoxindoles E and Annulated Indolizines
作者:Haya Khan、Dhiraj Barman、Subhabrata Sen
DOI:10.1021/acs.joc.4c00257
日期:——
dienophiles in numerous cycloadditionreactions. However, in situgeneration of benzyne involves either base-mediated thermal reactions, low-temperature conditions, or metal-catalyzed reactions of substituted arenes. This limits the applicability of benzynes as suitable dipolarophiles in cycloadditionreactions. Herein, we have reported a UVA (365 nM)-induced in situgeneration of benzynes (from triazenyl