Hydrogenations at Room Temperature and Atmospheric Pressure with Mesoionic Carbene-Stabilized Borenium Catalysts
作者:Patrick Eisenberger、Brian P. Bestvater、Eric C. Keske、Cathleen M. Crudden
DOI:10.1002/anie.201409250
日期:2015.2.16
1,2,3‐Triazolylidene‐based mesoionic carbene boranes have been synthesized in a convenient one‐pot protocol from the corresponding 1,2,3‐triazolium salts, base, and borane. Borenium ions are obtained by hydride abstraction and serve as catalysts in mild hydrogenation reactions of imines and unsaturated N‐heterocycles at ambient pressure and temperature.
Polycyclic α-amino-ε-caprolactams and related compounds
申请人:Audia James E.
公开号:US06958330B1
公开(公告)日:2005-10-25
Disclosed are polycyclic α-amino-ε-caprolactams and related compounds which are useful as synthetic intermediates in the preparation of inhibitors of β-amyloid peptide release and/or its synthesis.
A trifluoromethanesulfonic acid-catalyzed reaction of arylhydrazines with benzene
作者:Toshiharu Ohta、Shinji Miyake、Koichi Shudo
DOI:10.1016/s0040-4039(00)98933-0
日期:——
Arylhydrazines reacted with benzene in the presence of trifluoromethanesulfonic acid (TFSA) to give aminobiphenyls. This is a general method for the synthesis of aminobiphenyls.
在三氟甲磺酸(TFSA)存在下,芳肼与苯反应生成氨基联苯。这是合成氨基联苯的通用方法。
Direct Intermolecular Aniline <i>Ortho-</i>Arylation via Benzyne Intermediates
作者:Thanh Truong、Olafs Daugulis
DOI:10.1021/ol302875x
日期:2012.12.7
A method for direct, transition-metal-free ortho-arylation of anilines by aryl chlorides, bromides, fluorides, and triflates has been developed. This methodology provides the most direct approach to 2-arylanilines since no protecting or directing groups on nitrogen are required. The arylation is functional-group tolerant, with alkene, ether, trifluoromethyl, dimethylamino, carbonyl, chloro, and cyano
已经开发了一种通过芳基氯化物、溴化物、氟化物和三氟甲磺酸酯对苯胺进行直接、不含过渡金属的邻位芳基化的方法。这种方法提供了最直接的 2-芳基苯胺方法,因为不需要氮上的保护或导向基团。芳基化是官能团耐受的,可以耐受烯烃、醚、三氟甲基、二甲氨基、羰基、氯和氰基官能团。对映体纯联萘二胺的苯基化提供具有>99% ee 的产物。
Deoxyamino acid compounds, pharmaceutical compositions comprising same, and methods for inhibiting beta-amyloid peptide release and/or its synthesis by use of such compounds
申请人:——
公开号:US20030149022A1
公开(公告)日:2003-08-07
Disclosed are compounds which inhibit &bgr;-amyloid peptide release and/or its synthesis, and, accordingly, have utility in treating Alzheimer's disease. Also disclosed are pharmaceutical compositions comprising a compound which inhibits &bgr;-amyloid peptide release and/or its synthesis as well as methods for treating Alzheimer's disease both prophylactically and therapeutically with such pharmaceutical compositions.