6790-38-1Relevant articles and documents
Synthesis of 1,2-epoxy-4-pentene and 1,2,4,5-diepoxypentane by the hydroperoxide oxidation of 1,4-pentadiene
Nozhnin,Mel'nik,Yegorova,Kryukov
, p. 156 - 160 (2007/10/03)
Methods are proposed for the synthesis of 1,2-epoxy-4-pentene and 1,2,4,5-diepoxypentane on the basis of the hydroperoxide oxidation of 1,4-pentadiene. Physicochemical characteristics of 1,2-epoxy-4-pentene that have not been given in the literature are presented.
Deamination Reactions, 41. Reactions of Aliphatic Diazonium Ions and Carbocations with Ethers
Kirmse, Wolfgang,Jansen, Ulrich
, p. 2607 - 2625 (2007/10/02)
Aliphatic diazonium ions and carbocations were generated by deacylation of appropriate nitrosoureas (1, 5, 9) in alcohol-ether mixtures or in 2-alkoxyethanols.Ethers were generally inferior to alcohols in capturing cationic intermediates.Formation of trialkyloxonium ions led to alkyl exchange or ring opening.The observed reactivity orders were n-butyl > isobutyl for the diazonium ions, allyl > sec-butyl > tert-butyl for the carbocations, methoxy > ethoxy and oxirane > oxetane > tetrahydrofuran for the ethers, indicating the predominance of steric effects.Neighboring group participation in 4-methoxy-1-butanediazonium ions (58) and 4,5-epoxy-1-pentanediazonium ions (74) was detectable but inefficient ( 20percent of cyclic oxonium ions).