Nickel-Catalyzed C(sp<sup>3</sup>)–H Functionalization of Benzyl Nitriles: Direct Michael Addition to Terminal Vinyl Ketones
作者:Ninghui Zhang、Chunli Zhang、Xiaoping Hu、Xin Xie、Yuanhong Liu
DOI:10.1021/acs.orglett.1c02074
日期:2021.8.6
An efficient nickel(0)-catalyzed addition of benzyl nitriles to terminal vinyl ketones via C(sp3)–H functionalization has been developed. The reaction provides a novel and efficient protocol for the synthesis of α-functionalized benzyl nitriles with a wide range of structural diversity under mild reaction conditions while obviating the use of a strong base. The work might be potentially useful toward
Part 2. Notch-sparing γ-secretase inhibitors: The study of novel γ-amino naphthyl alcohols
作者:Han-Xun Wei、Dai Lu、Vivien Sun、Jing Zhang、Yongli Gu、Pamela Osenkowski、Wenjuan Ye、Dennis J. Selkoe、Michael S. Wolfe、Corinne E. Augelli-Szafran
DOI:10.1016/j.bmcl.2016.03.042
日期:2016.5
the amyloid precursor protein (APP) by γ-secretase. At the beginning of a series of studies from our laboratories, a series of novel γ-amino alcohols (1) were found to possess γ-secretase inhibitory activity and Notch-sparing effects. A new one-pot synthesis of γ-amino alcohols and the structure–activity relationship (SAR) of these analogs will be discussed.
A copper-catalyzed asymmetrichydrosilylation of β-nitroethyl aryl ketones has been disclosed, and the corresponding chiral alcohols could be obtained in high yields (up to 99% yield) and excellent enantioselectivities (up to 96% ee). Moreover, the reaction worked well on a gram scale with 0.3 mol % of ligand loading, indicating that our protocol has potential applications in the synthesis of important
Enantioselective addition of selenosulfonates to α,β-unsaturated ketones
作者:Shilong Luo、Nan Zhang、Zhen Wang、Hailong Yan
DOI:10.1039/c8ob00359a
日期:——
An organo-catalyzed enantioselective addition of selenosulfonates to α,β-unsaturatedketones was developed for the first time. With a chiral squaramide as an efficient catalyst, the desired α-selenylated ketones were obtained in a good yields with high enantioselectivity up to 89% ee, and good results could be obtained on a gram scale. The products could also be efficiently transformed into useful
A series of highly strained bicyclo[3.n.1]alkenones have been successfully constructed in good-to-excellent enantioselectivities and moderate-to-good yields via copper-catalyzed formal [3+3] cycloaddition. The versatile chiral cycloadducts could be selectively converted into various valuable bridge systems, which hold considerable potential for the construction of natural and bioactive compounds containing