Facile one-pot synthesis of 5-substituted hydantoins
作者:Ross G. Murray、David M. Whitehead、Franck Le Strat、Stuart J. Conway
DOI:10.1039/b719675j
日期:——
5-Substituted and 5,5-disubstituted hydantoins are synthesised from the corresponding aldehydes or ketones, using a one-pot, gallium(III) triflate-catalysed procedure that is compatible with a range of substrates and solvents.
Modified Bucherer-Bergs Reaction for the One-Pot Synthesis of 5,5′-Disubstituted Hydantoins from Nitriles and Organometallic Reagents
作者:Michael Shipman、Cyril Montagne
DOI:10.1055/s-2006-949644
日期:2006.9
Diverse sets of 5,5'-disubstituted hydantoins can conveniently be made in moderate to good yields (40-92%) by a one-pot process involving treatment of aromatic, heteroaromatic or aliphatic nitriles with an organometallic reagent (RLi or RMgX) followed by KCN/(NH4)(2)CO3.
Methods and systems for uniform control of bromine concentrations in water
申请人:——
公开号:US20030102271A1
公开(公告)日:2003-06-05
Reduced stabilization time of oxidation-reduction potential is achieved in a recreational body of water by baseloading bromide ions and dialkylhydantoin prior to biocidal treatment of the water body with N,N′-dihalo-5,5-dialkylhydantoin.