Divergent Syntheses of Indoles and Quinolines Involving N1–C2–C3 Bond Formation through Two Distinct Pd Catalyses
作者:Su San Jang、Young Ho Kim、So Won Youn
DOI:10.1021/acs.orglett.0c02898
日期:2020.12.4
annulative couplings of 2-alkenylanilines with aldehydes using alcohols as both the solvent and hydrogen source have been developed. These domino processes allow divergent syntheses of two significant N-heterocycles, indoles and quinolines, from the same substrate by tuning reaction parameters, which seems to invoke two distinct mechanisms. The nature of the ligand and alcoholic solvent had a profound
Hydrogenation of alkynes with hydrated nickel chloride, lithium and a catalytic amount of naphthalene
作者:Francisco Alonso、Miguel Yus
DOI:10.1016/s0040-4039(96)02239-3
日期:1997.1
The reaction of alkynes with a mixture of nickel (II) chloride dihydrate, an excess of lithium powder and a catalytic amount of naphthalene (8 mol%) in THF at room temperature, leads to the formation of the corresponding alkanes. The incorporation of deuterium oxide into the nickel salt complex yields deuterated hydrocarbons. The process can be applied to functionalised alkynes as well as to transform
Switching the Reactivity of the Nickel-Catalyzed Reaction of 2-Pyridones with Alkynes: Easy Access to Polyaryl/Polyalkyl Quinolinones
作者:Namrata Prusty、Smruti Ranjan Mohanty、Shyam Kumar Banjare、Tanmayee Nanda、Ponneri C. Ravikumar
DOI:10.1021/acs.orglett.2c02021
日期:2022.8.26
with alkynes has been achieved. A change in the reaction pathway was achieved by tuning the reaction conditions and incorporating a directing group. A wide variety of substrates and alkynes are amenable to this transformation. The key to success for this transformation is the use of sodium iodide as an additive. More importantly, we detected the five-membered metallacycle intermediate through HRMS