A New Method of Synthesis for Propargylic Amines and Ethers via Benzotriazole Derivatives Using Sodium Dialkynyldiethylaluminates
作者:Jin Hee Ahn、Meyoung Ju Joung、Nung Min Yoon、Daniela C. Oniciu、Alan R. Katritzky
DOI:10.1021/jo9814750
日期:1999.1.1
1-(alpha-Aminoalkyl)benzotriazoles react with sodium dialkynyldiethylaluminates to give propargylic amines in excellent yields, including unsubstituted N,N-dialkyl propargylamines, which are difficult to obtain from Lithium acetylide. The reaction of alpha-benzotriazolyl alkyl ethers and sodium dialkynyldiethylaluminate in the presence of zinc iodide also gives propargylic ethers in excellent yields. Unsubstituted propargyl ethers are prepared via the desilylation of trimethylsilylpropargyl ethers.
Johnson, Journal of the Chemical Society, 1946, p. 1013
作者:Johnson
DOI:——
日期:——
Ring‐Opening Intramolecular Arylation of 1,2‐Disubtituted Epoxides with Tuneable Stereoselectivity
A method of stereodivergent intramolecular ring-opening arylation of amine-tethered epoxides to 3,4-disubstituted tetrahydroquinolines has been developed. The tuneable good stereoselectivity was attained by switching the catalyst from titanocene(III) to Lewis–acidic zinc catalyst.