Visible-Light-Promoted (Phenylsulfonyl)methylation of Electron-Rich Heteroarenes and <i>N</i>-Arylacrylamides
作者:Fei Liu、Pixu Li
DOI:10.1021/acs.joc.6b00689
日期:2016.8.19
Visible-light-promoted radical (phenylsulfonyl)methylation reactions of electron-rich heteroarenes and N-arylacrylamides have been developed starting from bromomethyl phenyl sulfone derivatives. This method provides a mild and efficient access to various (phenylsulfonyl)methylated compounds.
Scope of the reductive aldol reaction: application to aromatic carbocycles and heterocyclesThis is one of a number of contributions from the current members of the Dyson Perrins Laboratory to mark the end of almost 90 years of organic chemistry research in that building, as all its current academic staff move across South Parks Road to a new purpose-built laboratory.
作者:Timothy J. Donohoe、David House、K. W. Ace
DOI:10.1039/b306937k
日期:——
The reductive aldol reaction of electron deficient aromatic compounds has been investigated and found to be a viable method for carbon–carbon bond formation. Reductions under ammonia and ammonia-free conditions were both capable of facilitating the aldol reaction although the latter showed more scope for reaction with enolisable aldehydes. Moreover, reduction under ammonia-free conditions allowed the addition of Lewis acids which improved stereoselectivity to favour the anti stereoisomer. Production of the syn diastereoisomer was possible through either one of two different protocols performed after partial reduction was complete. While the main emphasis of this paper concerns the reductive aldol reaction of electron deficient pyrroles, it was also shown that both benzenoid and furan aromatic compounds were amenable to such reducing conditions.
Short and highly efficient synthesis of lipid peroxidation inhibitor pyrrolostatin and some analogues thereof
作者:Jens Schmidt、Juliane Adrian、Christian B. W. Stark Christian B. W. Stark
DOI:10.1039/c5ob01066g
日期:——
A highly efficient and scalable synthesis of potent lipid peroxidation inhibitor pyrrolostatin is reported (4 steps, 48%). In addition to the synthesis of the natural product, strategies for the preparation of analogues differing in the three structural subunits, the polar head group, the N-substituent and the lipophilic tail are described.
作者:Timothy J. Donohoe、Jessica Y. K. Chiu、Rhian E. Thomas
DOI:10.1021/ol062705x
日期:2007.2.1
The first synthesis of the pyrrolidinone core of the polyene beta-lactone antibiotic KSM-2690 B is described. An ammonia-free Birch reductive aldol reaction utilizing acetaldehyde is one of the key steps, together with a ruthenium-catalyzed alkene isomerization reaction.