Configurational and Conformational Analysis of Chiral Molecules Using IR and VCD Spectroscopies: Spiropentylcarboxylic Acid Methyl Ester and Spiropentyl Acetate
作者:F. J. Devlin、P. J. Stephens、C. Österle、K. B. Wiberg、J. R. Cheeseman、M. J. Frisch
DOI:10.1021/jo020225n
日期:2002.11.1
The chiral monosubstituted derivatives of spiropentane, spiropentylcarboxylic acid methyl ester, 1, and spiropentyl acetate, 2, have been synthesized in optically active form. Configurational and conformational analysis of 1 and 2 has been carried out using infrared (IR) and vibrational circular dichroism (VCD) spectroscopies. Analysis of the experimental IR and VCD spectra has been carried out using
螺旋戊烷的手性单取代衍生物,螺戊基羧酸甲酯1和乙酸螺戊基酯2以光学活性形式合成。使用红外(IR)和振动圆二色性(VCD)光谱仪对1和2进行了构型和构象分析。使用从头算密度函数理论(DFT)进行了实验IR和VCD光谱的分析。对于1和2,DFT都会预测两个填充的构象。与使用DFT预测的1和2的构象平均IR和VCD光谱的实验比较,提供了预测构象的明确证据,并产生了1和R(+)/ S的绝对构型R(-)/ S(+) (-)for 2。