Highly Efficient Dehydrogenation of 5-Benzyl-3-phenyl-2-thioxoimidazolidin-4-one: Microwave versus Flash Vacuum Pyrolysis Conditions
作者:Ana J. Pepino、Walter J. Peláez、Elizabeth L. Moyano、Gustavo A. Argüello
DOI:10.1002/ejoc.201200257
日期:2012.6
5-Benzyl-3-phenyl-2-thioxoimidazolidin-4-one underwent thermal dehydrogenation to afford 5-benzylidene-2-thioxoimidaxolidin-4-one under microwave and flashvacuumpyrolysisconditions. A high predominance of the Z-isomer over the E-isomer of the imidazolidinone product was achieved. By using DFT and NBO calculations, the mechanism of the dehydrogenation and the selectivity were also explored.
Cook et al., Journal of the Chemical Society, 1950, p. 1892,1896
作者:Cook et al.
DOI:——
日期:——
Wheeler; Brautlecht, American Chemical Journal, 1911, vol. 45, p. 454
作者:Wheeler、Brautlecht
DOI:——
日期:——
A Further Study of the Cyclization of Ureido Derivatives of Unsymmetrical Iminodi-basic Acids Together with the Synthesis of Certain Hydantoins and Other Related Compounds<sup>1</sup>
作者:Doris R. Seeger、Anne MacMillan
DOI:10.1021/ja01259a061
日期:1942.7
S-Glucosylated hydantoins as new antiviral agents
作者:Ahmed A. El-Barbary、Ahmed I. Khodair、Erik B. Pedersen、Claus Nielsen
DOI:10.1021/jm00027a009
日期:1994.1
S-Glycosylation took place on reaction of 5-alkylidene- and 5-arylidene-3-aryl-2-thiohydantoins with glycosyl halides under alkaline conditions. Bisglucosylation also took place when N-3 unsubstituted hydantoins were reacted. The bisglucosylated hydantoins produced N-3 glucosylated hydantoins on treatment with ammonia in methanol. In antiviral studies the most active compounds against both HSV-1 and HSV-2 were 5- (2-thienylmethylene) -3-phenyl-2-(2,3 4,6-tetra-O-acetyl-beta-D-glucopyranosyl) -2-thiohydantoin and 5-(2-thienylmethylene)-3-(4-chlorophenyl) -2- (2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl) -2-thiohydantoin.