The endo,endo-2,3-dibromo-7-oxanorborneno[2,3-c]succinimide (1) undergoes complete inversion upon hydrogenolysis of the bromine substituents to form (5)(Zn/Ag couple in THF) or (26)(H2, Pd/C). The highly reactive dienophile, N-methyl 7-oxanorbornadieno[2,3-c]maleimide (3) is shown to be a transient intermediates in the Zn/Ag couple experiments by trapping with furan. Deuterium labelling experiments
的内切,ENDO -2,3-二
溴-7- oxanorborneno [2,3-C]琥珀
酰亚胺(1)经历在所述
溴取代基的氢解形式(完整的反转5)(
锌/
银夫妇在THF)或(26)(H 2,Pd / C)。在
锌/
银偶合实验中,用
呋喃捕集,显示出高反应性的亲双烯体N-甲基7-氧杂
硼烷二烯[2,3-c]马来
酰亚胺(3)是一种瞬时中间体。
氘标记实验已用于帮助阐明这些反应的机制。