Quinizarin boroacetate and 1,4-diaminoanthraquinone diboroacetate as dienophiles
作者:Alan M. Birch、Anthony J. H. Mercer、A. Margaret Chippendale、Colin W. Greenhalgh
DOI:10.1039/c39770000745
日期:——
Quinizarinboroacetate undergoes a Diels-Alder reaction with cyclopentadiene to give (after hydrolysis) a mixture of exo- and endo-leuco isomers (III) in the ratio 1 : 2·6 which can be oxidised to a bridged 2,3-cycloquinizarin derivative (IV; XOH); cycloaddition with acyclic dienes is accompanied by aromatisation.
奎尼扎林硼乙酸酯与环戊二烯进行狄尔斯-阿尔德反应,得到(水解后)比例为1:2·6的外-和内-隐色异构体(III )的混合物,可以将其氧化为桥联的2,3-环奎嗪林衍生物(IV; X OH);与无环二烯的环加成反应伴随有芳构化作用。
BIRCH A. M.; MERCER J. H.; CHIPPENDALE A. M.; GREENHALGH C. W., J. CHEM. SOC. CHEM. COMMUNS <CCOM-A8>, 1977, NO 21, 745-746
作者:BIRCH A. M.、 MERCER J. H.、 CHIPPENDALE A. M.、 GREENHALGH C. W.