Reaction of Ambident Dianions with Oxalic Acid Dielectrophiles – Effect of the Heteroatoms of the Dinucleophile on the Regiochemistry of Cyclization
作者:Peter Langer、Jörg Wuckelt、Manfred Döring、Rainer Beckert
DOI:10.1002/(sici)1099-0690(199807)1998:7<1467::aid-ejoc1467>3.0.co;2-h
日期:1998.7
Y-Shaped ambident dianions 1-6 were reacted with dielectrophilic oxalic acid-bis(imidoyl)dichlorides 7 providing a convenient access to novel N-heterocycles 8-13 containing a heteroanalogous oxalic acid unit. The cyclization reactions generally proceeded with good regioselectivity which is controlled by the heteroatoms of the dianion reagents.
使Y形的环境双价金属1-6与介电的草酸-双(亚氨基酰基)二氯化物7反应,从而提供了方便地进入含有杂类似草酸单元的新型N-杂环8-13的途径。环化反应通常以良好的区域选择性进行,该区域选择性由二价阴离子试剂的杂原子控制。