Iron(II) and Copper(I) Control the Total Regioselectivity in the Hydrobromination of Alkenes
作者:Daniel A. Cruz、Victoria Sinka、Pedro de Armas、Hugo Sebastian Steingruber、Israel Fernández、Víctor S. Martín、Pedro O. Miranda、Juan I. Padrón
DOI:10.1021/acs.orglett.1c02186
日期:2021.8.6
A new method that allows the complete control of the regioselectivity of the hydrobrominationreaction of alkenes is described. Herein, we report a radical procedure with TMSBr and oxygen as common reagents, where the formation of the anti-Markovnikov product occurs in the presence of parts per million amounts of the Cu(I) species and the formation of the Markovnikov product occurs in the presence
Acyclic Nucleoside Analogues as Inhibitors of <i>Plasmodium </i><i>f</i><i>alciparum</i> dUTPase
作者:Corinne Nguyen、Gian Filippo Ruda、Alessandro Schipani、Ganasan Kasinathan、Isabel Leal、Alexander Musso-Buendia、Marcel Kaiser、Reto Brun、Luis M. Ruiz-Pérez、Britt-Louise Sahlberg、Nils Gunnar Johansson、Dolores González-Pacanowska、Ian H. Gilbert
DOI:10.1021/jm060126s
日期:2006.7.1
previously reported inhibitors. The most active compound reported here against the P. falciparum enzyme had a K(i) of 0.2 microM. Molecular modeling studies provided a good rationale for the observed activities. Preliminary ADME studies indicated that some of the lead compounds are drug-like molecules. These compounds are useful tools for further investigating P. falciparumdUTPase for the development
Chemically reactive carbocyanine dyes incorporating an indolium ring moiety that is substituted at the 3-position by a reactive group or by a conjugated substance, and their uses, are described. Conjugation through this position results in spectral properties that are uniformly superior to those of conjugates of spectrally similar dyes wherein attachment is at a different position. The invention includes derivative compounds having one or more benzo nitrogens.
The Palladium-Catalyzed Anti-Markovnikov Hydroalkylation of Allylic Alcohol Derivatives
作者:Ryan J. DeLuca、Matthew S. Sigman
DOI:10.1021/ol303129p
日期:2013.1.4
A palladium-catalyzed hydroalkylation reaction of protected allylicalcohols using alkylzinc bromide reagents is reported. This account includes numerous allylic, homoallylic, and bishomoallylic alcoholderivatives, all with a uniform selectivity of >20:1 for the anti-Markovnikov product. The reaction features the ability to deliver enantiomerically enriched alcohols in unfunctionalized regions, which
Catalytic C–H Bond Alkylation of Azoles with Alkyl Halides Mediated by Nickel(II) Complexes of Phenanthridine-Based <i>N</i>^<i>N</i><sup><i>–</i></sup>^<i>N</i> Pincer Ligands
作者:Pavan Mandapati、Jason D. Braun、Baldeep K. Sidhu、Gabrielle Wilson、David E. Herbert
DOI:10.1021/acs.organomet.0c00161
日期:2020.5.26
Ni(II) complexes supported by tridentate N^N–^N diarylamido pincer-type ligands have been demonstrated to act as active catalysts in the carbon–carbon bond forming alkylation of azoles using unactivated alkyl halides. Here, we show that benzannulated phenanthridine-containing ligands can form homogeneous Ni(II) catalysts active with both benzoxazole and benzothiazole substrates. These precatalysts
三齿N ^ N – ^ N二芳基夹钳型配体支持的Ni(II)配合物在使用未活化的烷基卤化物形成唑的碳-碳键烷基化中充当活性催化剂。在这里,我们表明含苯并菲的配体可以形成均质的Ni(II)催化剂,对苯并恶唑和苯并噻唑均具有活性。这些预催化剂已在溶液和固态中得到了充分表征,包括循环伏安法。