<i>N</i>-Methyl-Benzothiazolium Salts as Carbon Lewis Acids for Si−H σ-Bond Activation and Catalytic (De)hydrosilylation
作者:Valerio Fasano、James E. Radcliffe、Liam D. Curless、Michael J. Ingleson
DOI:10.1002/chem.201604613
日期:2017.1.1
N−Me‐Benzothiazolium salts are introduced as a new family of Lewis acids able to activate Si−H σ bonds. These carbon‐centred Lewis acids were demonstrated to have comparable Lewis acidity towards hydride as found for the triarylboranes widely used in Si−H σ‐bond activation. However, they display low Lewis acidity towards hard Lewis bases such as Et3PO and H2O in contrast to triarylboranes. The N−Me‐benzothiazolium
LIGHT DRIVEN METAL PINCER PHOTOCATALYSTS FOR CARBON DIOXIDE REDUCTION TO CARBON MONOXIDE
申请人:The Board of Trustees of The University of Alabama
公开号:US20190083966A1
公开(公告)日:2019-03-21
Disclosed are N-heterocyclic carbene (NHC) and 4-pyridinol-derived pincer ligands and metal complexes containing these ligands. These compounds can be used to photocatalyticaly reduce CO
2
to CO.
Visible light-mediated metal-free double bond deuteration of substituted phenylalkenes
作者:Roman Iakovenko、Jan Hlaváč
DOI:10.1039/d0gc03081c
日期:——
Photoactivated metal free deuteration of a double bond was developed in an environmentally friendly manner.
双键的光活化金属无氘化反应以环境友好的方式进行了开发。
Rediscovering aminal chemistry: copper(<scp>ii</scp>) catalysed formation under mild conditions
作者:Juliana G. Pereira、João P. M. António、Ricardo Mendonça、Rafael F. A. Gomes、Carlos A. M. Afonso
DOI:10.1039/d0gc01977a
日期:——
aldehyde lithiation. Nevertheless, the existing methodologies for their formation typically employ harsh conditions limiting their usefulness. In this work, we present an efficient and mild methodology for the preparation of aminals from aromatic aldehydes, including furanic platforms. These mildconditions allowed ease of access to a plethora of aminals and as such we set out to explore previously unaccessible
Photoinduced electrontransfer (PET) reactionspromoted by 2-aryl substituted 1,3-dimethylbenzimidazolines (Ar-DMBIH) were investigated. Excited states of Ar-DMBIH, formed by irradiation using light above 360 nm, initiatePETreductions of various organic substrates, including transformations of epoxy ketones to aldols, free radical rearrangements such as the Dowd-Beckwith ring-expansion and 5-exo