Silvio Cunha and Manoel T. Rodrigues Jr.
The first bismuth(III)-catalyzed guanylation of thioureas
Tetrahedron Lett., 47 (2006), Issue 39, P. 6955-6956.
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http://dx.doi.org/10.1016/j.tetlet.2006.07.138A mild and general method for the synthesis of 2-substituted-5-hydroxypyrimidines
Tetrahedron Lett., 47 (2006), Issue 41, P. 7363-7365.
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http://dx.doi.org/10.1016/j.tetlet.2006.08.018