Aminomethylations via Cross-Coupling of Potassium Organotrifluoroborates with Aryl Bromides
作者:Gary A. Molander、Deidre L. Sandrock
DOI:10.1021/ol070543e
日期:2007.4.1
[GRAPHICS]The Suzuki-Miyaura cross-coupling reaction of N,N-dialkylaminomethyltrifluoroborates with aryl halides allows the construction of an aminomethyl aryl linkage through a disconnection based on dissonant reactivity patterns. A variety of these aminomethyltrifluoroborate substrates were prepared in good to excellent yields and then shown to cross-couple with equal facility to both electron-rich and electron-poor aryl halides as well as to a variety of heteroaromatic bromides.
Insights into the General and Efficient Cross McMurry Reactions between Ketones
The selective cross McMurry couplings of diaryl or aryl ketones with various substituted ketones were achieved in 53−94% isolated yields. It is believed that the strong affinity of the substituents to the low-valent titanium surface plays an important role in regards to moderating selectivity. Through the introduction of such substituents followed by their removal post McMurry coupling, structurally
Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids
作者:Duanyang Kong、Patrick J. Moon、Odey Bsharat、Rylan J. Lundgren
DOI:10.1002/anie.201912518
日期:2020.1.13
the acid unit to generate isocyanate or radical intermediates. Reported here is a process for the direct chemoselective decarboxylative amination of electron-poor arylacetates by oxidative Cu catalysis. The reaction proceeds at (or near) roomtemperature, uses native carboxylicacid starting materials, and is compatible with protic, electrophilic, and other potentially complicating functionality. Mechanistic