Direct Access to Primary Amines from Alkenes by Selective Metal‐Free Hydroamination
作者:Yi‐Dan Du、Bi‐Hong Chen、Wei Shu
DOI:10.1002/anie.202016679
日期:2021.4.26
selective synthesis of primary aminesfrom easily available precursors is attractive yet challenging. Herein, we report the rapid synthesis of primary aminesfrom alkenes via metal‐free regioselective hydroamination at room temperature. Ammonium carbonate was used as ammonia surrogate for the first time, allowing for efficient conversion of terminal and internal alkenes into linear, α‐branched, and α‐tertiary
Iron‐Catalyzed Radical Asymmetric Aminoazidation and Diazidation of Styrenes
作者:Daqi Lv、Qiao Sun、Huan Zhou、Liang Ge、Yanjie Qu、Taian Li、Xiaoxu Ma、Yajun Li、Hongli Bao
DOI:10.1002/anie.202017175
日期:2021.5.25
Asymmetric aminoazidation and diazidation of alkenes are straightforward strategies to build value‐added chiral nitrogen‐containing compounds from feedstock chemicals. They provide direct access to chiral organoazides and complement enantioselective diamination. Despite the advances in non‐asymmetric reactions, asymmetric aminoazidation or diazidation based on acyclic systems has not been previously
The Wittig reaction of nonstabilized ylides with benzaldehyde and benzophenone was investigated in detail by means of carbonyl- 14 C kinetic isotope effects, substituenteffects, and isotope-scrambling and probe experiments. The reaction with benzophenone gave the carbon isotope effects and the Hammett p values of considerable magnitude both in Li salt-free and salt-present conditions. In contrast
通过羰基- 14 C 动力学同位素效应、取代基效应以及同位素加扰和探针实验,详细研究了不稳定叶立德与苯甲醛和二苯甲酮的 Wittig 反应。与二苯甲酮的反应在无锂和含盐条件下都产生了相当大的碳同位素效应和哈米特 p 值。相比之下,它们与苯甲醛的反应非常小。烯酮异构化和脱卤探针实验表明不稳定的叶立德有足够的能力将电子转移给苯甲醛和二苯甲酮
Imai, Toshiro; Nishida, Shinya, Canadian Journal of Chemistry, 1981, vol. 59, p. 2503 - 2509
作者:Imai, Toshiro、Nishida, Shinya
DOI:——
日期:——
IMAI, TOSHIRO;NISHIDA, SHINYA, CAN. J. CHEM., 1981, 59, N 16, 2503-2509