(R)-4-(4-Aminophenyl)-2,2,4-trimethylchroman and (S)-4-(4-aminophenyl)-2,2,4-trimethylthiachroman.

(R)-4-(4-Aminophenyl)-2,2,4-trimethylchroman and (S)-4-(4-aminophenyl)-2,2,4-trimethylthiachroman.
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(R)-4-(4-氨基苯基)-2,2,4-三甲基苯并二氢吡喃和(S)-4-(4-氨基苯基)-2,2,4-三甲基苯并二氢吡喃。

DOI:
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发表时间:
2011
期刊:
Acta Crystallographica Section C: Crystal Structure Communications
影响因子:
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通讯作者:
DEREK R. Wilson
DEREK R. Wilson
中科院分区:
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文献类型:
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作者:
C. Frampton;D. Macnicol;DEREK R. Wilson

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标题化合物C(18)H(21)NO和C(18)H(21)NS与4-(4-羟基苯基)-2,2,4-三甲基苯并二氢吡喃和4-(2,4-二羟基苯基)-2,2,4-三甲基苯并二氢吡喃类似物是同构的,并通过N-H···O或N-H···S氢键沿着[100]方向形成伸展的直链。这两种化合物的绝对构型是由反常色散方法确定的,同时参考Flack参数,对于轻原子化合物,贝叶斯统计Bijvoet差异。
The title compounds, C(18)H(21)NO and C(18)H(21)NS, in their enantiomerically pure forms are isostructural with the enantiomerically pure 4-(4-hydroxyphenyl)-2,2,4-trimethylchroman and 4-(2,4-dihydroxyphenyl)-2,2,4-trimethylchroman analogues and form extended linear chains via N-H···O or N-H···S hydrogen bonding along the [100] direction. The absolute configuration for both compounds was determined by anomalous dispersion methods with reference to both the Flack parameter and, for the light-atom compound, Bayesian statistics on Bijvoet differences.