cyclotriphenolene. Optical resolution of the latter compound followed by deuteriolysis of the phenolic groups then provided the desired (+) and (-)-cyclotribenzylene with a high isotopic purity. The energy barrier for the crown inversion in the titled compound was calculated from racemization rates. Interpretation in terms of vibronic rotation of the B/sub 2u/ transition moment, induced by the deuterium atoms
特定化合物的对映异构体,其手性是由于同位素取代,由环三亚甲基
丙烯合成;它们的绝对构型被确定为 M-(-) 或 P-(+)。通过相应的三(2-苯基-1-
四唑基)醚的氢解除去起始化合物中的
酚基,并将所得环三
苯甲醚脱甲基为环三
苯酚。后一种化合物的光学拆分,然后是
酚基的
氘代分解,然后提供了所需的 (+) 和 (-)-环三苯亚甲基,具有高同位素纯度。由外消旋化率计算标题化合物中冠反转的能垒。B/sub 2u/过渡矩的振动旋转解释,由
氘原子扰动每个苯环的呼吸模式引起,