Regioselective Acetylate of 1,3-Disubstituted Selenoureas Promoted by Recyclable Ion-Supported Hypervalent Iodine(III) Reagent
作者:Yuanyuan Xie、Haixuan Pan
DOI:10.1080/10426507.2013.797418
日期:2014.1
environmentally friendly reaction of 1,3-disubstituted selenoureas with a recyclable ion-supported hypervalent iodine(III) reagent produces regioselectively N-acetylureas. This is the first example of ion-supported hypervalent iodine reagent [dibmim]+[BF4]−being employed as an N-acetylating agent. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and
Shafiee,A. et al., Journal of Heterocyclic Chemistry, 1978, vol. 15, p. 39 - 41
作者:Shafiee,A. et al.
DOI:——
日期:——
Synthesis of 1,3-Selenazol-2(3<i>H</i>)-imines
作者:Plamen K. Atanassov、Anthony Linden、Heinz Heimgartner
DOI:10.1002/hlca.200900452
日期:2010.3
AbstractThe reaction of N,N′‐diarylselenoureas 16 with phenacyl bromide in EtOH under reflux, followed by treatment with NH3, gave N,3‐diaryl‐4‐phenyl‐1,3‐selenazol‐2(3H)‐imines 13 in high yields (Scheme 2). A reaction mechanism via formation of the corresponding Se‐(benzoylmethyl)isoselenoureas 18 and subsequent cyclocondensation is proposed (Scheme 3). The N,N′‐diarylselenoureas 16 were conveniently prepared by the reaction of aryl isoselenocyanates 15 with 4‐substituted anilines. The structures of 13a and 13c were established by X‐ray crystallography.
COHEN V. I., SYNTHESIS, 1980, NO 1, 60-63,
作者:COHEN V. I.
DOI:——
日期:——
A Convenient Synthesis of Mono-,<i>N</i>,<i>N</i>′-Di-, and Trisubstituted Selenoureas from Methyl Carbamimidothioates (<i>S</i>-Methylpseudothioureas)