4510-34-3Relevant articles and documents
Mechanistic Probes of the Hydride-Transfer Process in the Reduced Nicotinamide Adenine Dinucleotide Dependent Alcohol Dehydrogenase Reactions
Chung, Sung-Kee,Park, Seung-Un
, p. 3197 - 3198 (1982)
NADH-dependent alcohol dehydrogenase reductions of several chemically based radical-probe molecules proceed without any indication of the radical anion intermediates.
Heteroleptic Copper-Based Complexes for Energy-Transfer Processes: E → Z Isomerization and Tandem Photocatalytic Sequences
Cruché, Corentin,Neiderer, William,Collins, Shawn K.
, p. 8829 - 8836 (2021/07/28)
Energy-transfer processes involving copper complexes are rare. Using an optimized heteroleptic copper complex, Cu(bphen)(XantPhos)BF4, photosensitized E → Z isomerization of olefins is demonstrated. The XantPhos ligand afforded sensitizers with improved catalyst stability, while the bphen ligand lengthened the excited-state lifetime. A series of 25 di- and trisubstituted alkenes underwent photoisomerization, including macrocycles and 1,3-enynes. Cu(bphen)(XantPhos)BF4 could also be employed in a tandem ATRA/photoisomerization process employing arylsulfonyl chlorides, an example of photoisomerization with halide-substituted olefins.
A simple and efficientin situgenerated copper nanocatalyst for stereoselective semihydrogenation of alkynes
Park, Byoung Yong,Lim, Taeho,Han, Min Su
supporting information, p. 6891 - 6894 (2021/07/19)
Development of a simple, effective, and practical method for (Z)-selective semihydrogenation of alkynes has been considered necessary for easy-to-access applications at organic laboratory scales. Herein, (Z)-selective semihydrogenation of alkynes was achieved using a copper nanocatalyst which was generatedin situsimply by adding ammonia borane to an ethanol solution of copper sulfate. Different types of alkynes including aryl-aryl, aryl-alkyl, and aliphatic alkynes were selectively reduced to (Z)-alkenes affording up to 99% isolated yield. The semihydrogenation of terminal alkynes to alkenes and gram-scale applications were also reported. In addition to eliminating catalyst preparation, the proposed approach is simple and practical and serves as a suitable alternative method to the conventional Lindlar catalyst.
8π Electrocyclic Reaction of Phosphonate Derivatives: Access to Seven-Membered Cross-Conjugated Cyclic Trienes
Saito, Hiroki,Kato, Ranmaru,Ikeuchi, Kazutada,Suzuki, Takahiro,Tanino, Keiji
supporting information, p. 9606 - 9610 (2021/12/17)
An anionic 8π electrocyclic reaction of 4-(diethoxyphosphoryl)-1,3,6-heptatriene derivatives was developed. Under the influence of a base, the substrate underwent deprotonation at the C5 position followed by the 8π electrocyclization of the resulting hept
