In 2019,Angewandte Chemie, International Edition included an article by Meng, Qing-Yuan; Schirmer, Tobias E.; Katou, Kousuke; Koenig, Burkhard. Recommanded Product: 1779-49-3. The article was titled 《Controllable Isomerization of Alkenes by Dual Visible-Light-Cobalt Catalysis》. The information in the text is summarized as follows:
Thermodn. and kinetic isomerization of alkenes accomplished by the combination of visible light with Co catalysis is reported. Utilizing Xantphos as the ligand, the most stable isomers are obtained, while isomerizing terminal alkenes over one position can be selectively controlled by using DPEphos as the ligand. The presence of the donor-acceptor dye 4CzIPN accelerates the reaction further. Transformation of exocyclic alkenes into the corresponding endocyclic products could be efficiently realized by using 4CzIPN and Co(acac)2 in the absence of any addnl. ligands. Spectroscopic and spectroelectrochem. investigations indicate CoI being involved in the generation of a Co hydride, which subsequently adds to alkenes initiating the isomerization. After reading the article, we found that the author used Methyltriphenylphosphonium bromide(cas: 1779-49-3Recommanded Product: 1779-49-3)
Methyltriphenylphosphonium bromide(cas: 1779-49-3) is used for methylenation through the Wittig reaction. It is utilized in the synthesis of an enyne and 9-isopropenyl -phenanthrene by using sodium amide as reagent. Recommanded Product: 1779-49-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary