Intramolecular nucleophilic attack by urea nitrogen. Reactivity–selectivity relationships for the general acid–base catalysed cyclisations of ureido acids and esters
1989 ◽
pp. 347-353
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1984 ◽
pp. 745-751
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2005 ◽
Vol 127
(19)
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pp. 7033-7040
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1997 ◽
Vol 29
(9)
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pp. 647-654
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