作者:Yaacov Herzig、Lena Lerman、Willy Goldenberg、David Lerner、Hugo E. Gottlieb、Abraham Nudelman
DOI:10.1021/jo052621m
日期:2006.5.1
The chemical stability and reactivity of hydroxy-1-aminoindans and their N-propargyl derivatives are strongly affected by the position of the OH group and its orientation relative to that of the amino moiety. Thus, the 4- and 6-OH regioisomers were found to be stable, while the 5-OH analogues were found to be inherently unstable as the free bases. The latter, having a para orientation between the OH
羟基-1-氨基茚满及其氮的化学稳定性和反应活性-炔丙基衍生物受到OH基团的位置及其相对于氨基部分的取向的强烈影响。因此,发现4-和6-OH区域异构体是稳定的,而发现5-OH类似物作为游离碱固有地不稳定。在OH和氨基部分之间具有对位取向的后者只能作为它们的盐酸盐被分离出来。7-羟基-1-氨基茚满和7-羟基-1-炔丙基氨基茚满是中间情况。尽管即使作为游离碱也足够稳定,但它们在某些实验条件下仍表现出出乎意料的反应性。5-羟基和7-羟基氨基茚满的不稳定性归因于它们向相应的反应性醌甲基化物(QM)中间体的容易转化。该Ø经由狄尔斯-阿尔德反应(Diels-Alder reaction)成功地从乙基-乙烯基醚中捕获了从7-羟基-氨基茚满获得的-QM,得到三环缩醛32a,b。