The octant rule. XIV. synthesis and circular dichroism of α- and -deuteriobicyclo[3.2.1]octan-3-one and 6,6-dimethybicyclo[3.1.1]heptan-3-one
作者:David A. Lightner、B. Vincent Crist
DOI:10.1016/s0040-4020(01)96653-0
日期:1985.1
5S)-2S-Deuteriobicyclo[3.2.1]octan-3-one (1) and (1R,5S)-2R-Deuteriobicyclo[3.2.1]octan-3-one (2), prepared by diazomethane ring enlargement of (1S,4R)-2(exo)-deuteriobicyclo-[2.2.1] heptan-2-one and (1S,4R)-2(endo)-deuteriobicyclo[2.2.1]heptan-2-one respectively, both gave (−) n-π* circular dichroism (CD) Cotton effects, Δεmax294 = −0.05 and Δεmax294=−0.1, respectively, in hydrocarbon solvent. (1S,5R)-2S-Deuterio-6
通过重氮甲烷环制备的(1R,5S)-2S-氘代双环[3.2.1] octan-3-one(1)和(1R,5S)-2R-氘代双环[3.2.1] octan-3-one(2) (1S,4R)-2(exo)-氘代双环-[2.2.1]庚烷-2-酮和(1S,4R)-2(endo)-氘代双环[2.2.1]庚--2-酮的扩大,两者,得到( - )N-π *圆二色性(CD)棉花效果,Δε最大294 = -0.05和Δε最大294 = -0.1,分别在烃类溶剂。(1S,5R)-2S-氘-6,6-二乙基双环[3.1.1]庚烷-3-一(3)和(1S,5R)-2R-氘-6,6-二甲基双环[3.1.1]庚烷由(-)桃金娘制制的-3-one(4)均表现出非凡的振动精细结构,可用于在烃溶剂和相反符号的CEsΔε中观察到的n-π * CD跃迁最大282 = -0.01和Δε最大279 = + 0.01分别在CF 3 CH