First General Route to Substituted α-Arylamino-α′-chloropropan-2-ones by Oxidation of N-Protected Aminohalohydrins: The Importance of Disrupting Hydrogen Bond Networks
摘要:
通过红外光谱和计算机建模证实,δ-芳香族氨基醇中存在分子内和分子间氢键网络,这抑制了它们氧化成相应的δ-氨基酮。一个简单的方案,包括高区域选择性保护(作为氨基甲酸酯)和随后的 Dess-Martin 高碘烷氧化,可得到接近定量产率的所需 N 保护酮,用碘三甲基硅烷温和处理后,可得到一系列不同官能化的δ-±-芳基氨基-δ′-氯酮。
First General Route to Substituted α-Arylamino-α′-chloropropan-2-ones by Oxidation of N-Protected Aminohalohydrins: The Importance of Disrupting Hydrogen Bond Networks
摘要:
通过红外光谱和计算机建模证实,δ-芳香族氨基醇中存在分子内和分子间氢键网络,这抑制了它们氧化成相应的δ-氨基酮。一个简单的方案,包括高区域选择性保护(作为氨基甲酸酯)和随后的 Dess-Martin 高碘烷氧化,可得到接近定量产率的所需 N 保护酮,用碘三甲基硅烷温和处理后,可得到一系列不同官能化的δ-±-芳基氨基-δ′-氯酮。
Chemoselective CaO-Mediated Acylation of Alcohols and Amines in 2-Methyltetrahydrofuran
作者:Vittorio Pace、Pilar Hoyos、Andrés R. Alcántara、Wolfgang Holzer
DOI:10.1002/cssc.201200922
日期:2013.5
Calcium oxide is proposed as an innocuous acid scavenger for the chemoselective synthesis of amide‐ and ester‐type compounds. Although these molecules have wide spread applications in organic and pharmaceutical chemistry, and a large number of routes have been designed for their synthesis, the development of more efficient and environmentally friendly acylation strategies remains an ongoing challenge