(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:
影响因子:
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通讯作者:
DEREK R. Wilson
中科院分区:
文献类型:
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作者:
C. Frampton;D. Macnicol;DEREK R. Wilson
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.