In this work, we theoretically investigated Rh-catalyzed trans-hydroboration of alkyne in presence of amine, to clarify the reaction mechanism, the active species, and the rate-determinig step of the process.Akihiro SugivamaYuki KuramotoYoshihide Nakao...
Video duration: 2m Ask a question 11 Comments 18 This reaction yields ananti-Markovnikovvinyl alcohol, which will tautomerize into a carbonyl on the terminal position, which is the definition of an aldehyde. Previous Topic: Alkyne Hydration
ChemInform Abstract: Novel Spiroacetal Synthesis via Hydroboration of Alkynediolsring closure reactionshydroxylation, hydroboration, phosphorylation, silylationbenzopyran derivativesChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading ...
The flask is charged with a mixture of 33.6 g (0.48 mole) of 2-methyl-2-butene and 180 ml of a 1 M solution of sodium borohydride in diglyme. The flask is cooled in an ice bath and stirring begun. Boron trifluoride etherate (0.24 mole) is added dropwise to the mixture and the ...
(Table1, entries 4-10, also see Supplementary Tables1to5for details), the best reaction conditions were identified as 0.2 mmol of alkyne, 0.24 mmol of HBdan, 0.6 mmol of HBpin, 4 mol % of Co(acac)2, 4 mol% of Xantphos and 3.0 equiv of NEt3in 0.2 mL of ...
ChemInformPereira Schubert,Srebnik Morris.A study of hydroboration of alkenes and alkynes with pinacolborane catalyzed by transition metals.Tetrahedron Lett. 1996... S.,PEREIRA,M.,... - 《Cheminform》 被引量: 170发表: 1996年 A cobalt-catalyzed alkene hydroboration with pinacolborane. An extremely ...
Asymmetric hydroboration 专利名称：Asymmetric hydroboration 发明人：JOHN MICHAEL BROWN 申请号：AU8112694 申请日：19941109 公开号：AU8112694A 公开日：19950529 专利内容由知识产权出版社提供 摘要：A process for the reaction of an alkene, allene or alkyne with a borane in the presence of a catalyst to ...
For example, platinum catalysts effect the hydrosilylation of alkenes with anti-Markovnikov selectivity and constitute an enabling technology in the multibillion dollar silicones industry. Increased emphasis on sustainable catalytic methods and on more economic processes has shifted the focus to catalysis ...
Which of the following alcohols could not be made selectively by hydroboration-oxidation of an alkene? Explain. What alkyne would you start with to prepare for the following compound by a hydroboration-oxidation reaction? What alkyne would you start...
Chem., Univ. Leuven, B‐3001 Leuven, Belg.John Wiley & Sons, LtdChemInformSynthesis of Azocino[5,4‐ b ]indoles via Gold‐Catalyzed Intramolecular Alkyne Hydroarylation[J] . Vsevolod A. Peshkov,Olga P. Pereshivko,Erik V. Van der Eycken.Adv. Synth. Catal. . 2012 (14‐)...