Mild catalytic deoxygenation of amides promoted by thorium metallocene
作者:Sayantani Saha、Moris S. Eisen
DOI:10.1039/d0dt02770g
日期:——
organoactinide-catalyzed (Cp*2ThMe2) hydroborated reduction of a wide range of tertiary, secondary, and primary amides to the corresponding amines/amine–borane adducts via deoxygenation of the amides is reported herein. The catalytic reactions proceed under mild conditions with low catalyst loading and pinacolborane (HBpin) concentration in a selective fashion. Cp*2ThMe2 is capable of efficiently catalysing
Alkoxide Activation of Aminoboranes towards Selective Amination
作者:Cristina Solé、Elena Fernández
DOI:10.1002/anie.201305098
日期:2013.10.18
the (inter)action: The interaction of alkoxides with the sp2 Bpin (pin=pinacol) moiety in aminoboranes forms the in situ Lewis acid–base adduct [RO−→B(OR)2N(R′)2] which enables the amino moiety to react as a strong nucleophile with several electrophiles, thus providing amino alcohols, β‐enamino esters, and β‐hydroxy amides in a direct and remarkably selective way (see scheme).
Photoinduced Deaminative Borylation of Unreactive Aromatic Amines Enhanced by CO<sub>2</sub>
作者:Akira Shiozuka、Kohei Sekine、Yoichiro Kuninobu
DOI:10.1021/acs.orglett.1c01503
日期:2021.6.18
Herein, direct unreactive C–N borylation of aromatic amines by a photocatalyst was achieved. The C–N borylation of aromatic amines with bis(pinacolato)diboron (B2pin2) proceeded using a pyrene catalyst under light irradiation to afford desired borylated products and aminoborane as a byproduct. The yield of the borylated product improved under a CO2 atmosphere which probably reduced the inhibitory effect
Efficient Hydroboration of Esters and Nitriles Using a Quinazolinone‐Supported Titanium(IV) Multitasking Catalyst
作者:Rajrani Narvariya、Suman Das、Susmita Mandal、Archana Jain、Tarun K. Panda
DOI:10.1002/ejic.202300247
日期:2023.9
Synthesis, structure, and catalytic use of a novel quinazolinone TiIV complex are reported. This TiIV complex was found to be an effective catalyst for the reduction of esters as well as nitriles with pinacolborane (HBpin) to afford the corresponding boryl ethers and diboryl amines at ambient temperature under solvent-free conditions in high yields and with wide functional group tolerance.
报道了一种新型喹唑啉酮 Ti IV配合物的合成、结构和催化用途。人们发现这种 Ti IV络合物是一种有效的催化剂,可以用频那醇硼烷 (HBpin) 还原酯类和腈类,在环境温度、无溶剂条件下以高收率和宽官能团生成相应的硼基醚和二硼基胺。宽容。