103249-79-2Relevant articles and documents
Efficient assembly of 2,5,6-substituted pyrimidines via MgI 2-Mediated morita-baylis-hillman reaction
Sharma, Vasudha,McLaughlin, Mark L.
experimental part, p. 327 - 331 (2010/09/08)
A mild and efficient protocol for the synthesis of a 2,6-disubstituted pyrimidine-5-carboxylate library via a Morita-Baylis-Hillman (MBH) adduct is described. Herein, the three step methodology involves the use of substituted -iodomethylene β-keto ester intermediates obtained after oxidation of the MBH adducts, which are condensed with various types of amidine or guanidine derivatives, to generate the 2, 6-disubstituted pyrimidines-5-carboxylate libraries.
Reaction of 2-Dimethylaminomethylene-1,3-diones with Dinucleophiles. VIII. Synthesis of Ethyl and Methyl 2,4-Disubstituted 5-Pyrimidinecarboxylates
Schenone, Pietro,Sansebastiano, Laura,Mosti, Luisa
, p. 295 - 305 (2007/10/02)
Reaction of ethyl or methyl 2-dimethylaminomethylene-3-oxoalkanoates with N-C-N dinucleophiles such as guanidine, acetamidine or benzamidine afforded in high yields the relative esters of 4-substituted 2-amino-, 2-methyl- or 2-phenyl-5-pyrimidinecarboxylic acids, respectively.These esters were hydrolyzed to the corresponding carboxylic acids, which were converted by heating to 4-substituted 2-pyrimidinamines, 2-methyl or 2-phenylpyrimidines, respectively, generally in excellent yields.The 4-unsubstituted ethyl 2-amino-, 2-methyl- and 2-phenyl-5-pyrimidinecarboxylateswere obtained in moderate yields by reaction of the above dinucleophiles with ethyl 2,2-diformylacetate.These esters were hydrolyzed and the corresponding acids (with the exception of the 2-methyl derivative) were decarboxylated to give 2-pyrimidinamine and 2-phenylpyrimidine in satisfactory yields.
