Thus, 10-Undecenoic acid can be easily and quantitatively converted to 6 in PEG-400, while 5 is produced in PEG-200. 5 can also be obtained in non-polar solvents with PEG-200/400 as a phase transfer catalyst.doi:10.1080/00397919108021786...
Taking the strain: Strain-promoted cycloadditions between alkynes and azides have facilitated mild and bioorthogonal protein modification. Azides can be in... JCMV Hest,FLV Delft - 《Chembiochem》 被引量: 206发表: 2011年 Priming with an Adenovirus 35-Circumsporozoite Protein (CS) Vaccine followed...
The reactions of scorpionate-anchored yttrium and lutetium dialkyls with terminal alkynes were investigated, and the nature of the complexes was found to d... KO Saliu,J Cheng,R Mcdonald,... - 《Organometallics》 被引量: 16发表: 2010年 Used for connecting a first terminal with a second ...
ARTICLE Received 6 Jun 2012 | Accepted 14 Nov 2012 | Published 18 Dec 2012 DOI: 10.1038/ncomms2291 Homo-coupling of terminal alkynes on a noble metal surface Yi-Qi Zhang1, Nenad Kepcˇija1, Martin Kleinschrodt1, Katharina Diller1, Sybille Fischer1, Anthoula C. Papageorgiou1, Francesco ...
Ni-catalyzed regio- and stereo-defined intermolecular cross-electrophile dialkylation of alkynes without directing group Article Open access 10 February 2021 Data availability All data supporting the findings of this study are available within the paper and its Supplementary Information files. References...
The N-heterocyclic carbene silver(I) complex 1,3-bis(4-methylbenzyl)imidazol-2-ylidene silver chloride was applied as the effective catalyst for the three-component carboxylative coupling of terminal alkynes, butyl iodide and carbon dioxide. The reaction proved to be highly efficient when using 2...
A direct cyanation of terminal alkynes for the synthesis of propionitrile derivatives, with the aid of silver salt using water additive, has been achieved. The cyano source used is N-isocyanoiminotriphenylphosphorane, which is nontoxic, safe, and easy to handle. This protocol is characterized by...
An iridium N-heterocyclic carbene (NHC) complex, IrCl(cod)(IPr), successfully catalyzed an addition of common aromatic acid chlorides to terminal alkynes to afford (Z)-beta-chloro-alpha,beta-unsaturated ketones regio- and stereoselectively. When the NHC ligand (IPr) was changed to a phosphine ...
However, the development of direct and selective methods for alkane functionalization is still in its infancy due to the low reactivity of C(sp3)–H bonds10–15. With the rapid development of C–H functionalization, direct C–H alkynylation with terminal alkynes has recently emerged as one of ...
Cross coupling via the activation of two carbon-hydrogen bonds avoids the need for organometallic coupling partners and associated waste. Here, the authors report a radical process that allows selective coupling between alkynes and non-activated C(sp3)-H groups via a multimetallic catalytic system....