Results 101 to 110 of about 15,949 (256)
The conversion of racemic terminal epoxides into either (+)- or (-)-diol gamma- and delta-lactones
, 2000 The conversion of racemic terminal epoxides into either (+)- or (-)-diol gamma- and delta-lactones is described with hydrolytic kinetic resolution (HKR) as the key ...
Liu, ZY +3 more
core
, 2014 The transformation of epoxides into other compounds by exploiting the reactivity of the oxirane ring has emerged as a powerful tool in organic synthesis.
Florio S. +7 more
core +1 more source
Reactions of a-4(20)-epoxy-5-O-mesyltriacetyltaxicine I induced by BF3·Et2O/Bu4NBr [PDF]
Journal of the Serbian Chemical Society, 2006 The reaction of a-(20)-epoxy-5-O-mesyltriacetyltaxicine I (2) with BF3·Et2O/Bu4NBr can give rise to 4 different products. Each of these products can be obtained selectively, under the appropriate reaction conditions.
ZORANA FERJANCIC +3 more
doaj
Ring‐Opening of Epoxides in Water
, 2011 Epoxides and water mix well together. The use of water represents an intriguing alternative to organic solvents, not only for developing green processes but also for exploring a totally new and peculiar reactivity. Epoxides react very efficiently
Simona Bonollo +5 more
core +1 more source
Selective Transformations of Epoxides Using Bimetallic Catalysts: Catalyst Development, Methodology, and Mechanistic Studies [PDF]
, 2017 Epoxides are versatile building blocks in organic chemistry due to their inherent reactivity and synthetic availability. One particularly interesting reaction is the carbonylation of epoxides to β-lactones.
Lamb, Jessica Rachel
core +1 more source
, 1979 The formation and stability of the epoxides of 4-hydroxy-3,5-dimethoxycinnamaldehyde, 3,4,5- trimethoxycinnamaldehyde, 4-hydroxy-3-methoxycinnamaldehyde and 3,4-dimethoxycinnamaldehyde and the diacetates of these aldehydes have been studied under a ...
EFM Stephenson, R Olstein
core +1 more source
Angewandte Chemie International Edition, EarlyView.We introduce the Aza‐Büchner–Curtius–Schlotterbeck (ABCS) reaction: A mild, catalyst‐free method for homologating aryl imines. Diverging from the traditional BCS mechanism, the diazo intermediate undergoes selective C─C insertion to form an all‐carbon quaternary center.
Simon O. Angerer +6 more
wiley +1 more source
Acid-Catalyzed Rearrangement of Epoxides
This chapter illustrates recent developments of acid-catalyzed Meinwald and semipinacol rearrangements of epoxides. The oxiranes can be elaborated under different reaction conditions, involving the use of Brønsted acids, Lewis acids derived from the main
Meninno, S., Lattanzi, A.
core +1 more source
Deprotonation-electrophile trapping of terminal epoxides.
, 2016 Organolithium-induced deprotonation of terminal epoxides in the presence of appropriate diamine ligands allows trapping with a range of electrophiles, yielding functionalised di- and tri-substituted epoxides in good yields and with control of ...
core +1 more source
Regio- and stereoselective synthesis of new diaminocyclopentanols
Beilstein Journal of Organic Chemistry, 2014 The optimal conditions for regio- and stereoselective epoxide ring opening of N,N-disubstituted 1,2-epoxy-3-aminocyclopentanes by different nucleophilic reagents have been developed.
Evgeni A. Larin +2 more
doaj +1 more source