Nickel-Catalyzed Isomerization/Allylic Cyanation of Alkenyl Alcohols
作者:Ying Ding、Jinguo Long、Feilong Sun、Xianjie Fang
DOI:10.1021/acs.orglett.1c02143
日期:2021.8.6
Herein reported is a nickel-catalyzed isomerization/allylic cyanation of alkenyl alcohols, which complements current methods for the allylic substitution reactions. The specific diphosphite ligand and methanol as the solvent are crucial for the success for this transformation. A gram-scale regioconvergent experiment and formal synthesis of quebrachamine demonstrate the high potential of this methodology
A series of 5-hydroxypentenes was synthesized from the reaction mixture of Mg powder, 1,2-dibromoethane, 4-bromobutene and aldehydes in THF under ultrasound. This sonochemicalBarbierreaction provides a simple and alternative method for preparation of 5-hydroxypentene instead of the allylating reagent with epoxide.
efficient distal ipso-migration of O- and S-containing heteroaryls and the radical heteroarylation of unactivated alkenes. The migration is triggered by various fluoroalkyl radicals, leading to valuable multifunctionalized ketones. The comparisons of migratory aptitude for O-/S-containing heteroaryls are comprehensively investigated. The origin of the chemoselective migration could be partially attributed
A series of beta-bromo- and beta-iodotetrahydrofurans was synthesized from the reaction mixture of 5-hydroxypentene, L-proline, NBS (or I-2) in THF at 0 degrees C for 10 min. This L-proline-catalyzed intramolecular cyclization provides a simple and efficient method for the preparation of P-halogenated tetrahydrofuran. (c) 2007 Elsevier Ltd. All rights reserved.