Alkylation of 4,6-dimethy1-2-pyrimidineacetonitrile and 2,6-dimethyl-4-pyrimidineacetonitrile with chloroacetic acid anilides was shown to give 5-amino-4-(4,6-dimethyl-2-pyrimidinyl)-2,3-dihydro-1-arylpyrrol-2-ones and 5-amino-4-(2,6-dimethyl-4-pyrimidinyl)-2,3-dihydro-1-arylpyrrol-2-ones, respectively. Corresponding isomeric compounds, 5-amino-4-pyrimidinyl-2,3-dihydropyrrol-3-ones were obtained by Claisen condensation of the mentioned pyrimidineacetonitriles with N-Boc alpha-aminoacids imidazolides followed by removal of the protecting group accompanied with simultaneous ring closure.
作者:Anton V. Tverdokhlebov、Igor Yu. Nestorak、Andrey A. Tolmachev、Yulian M. Volovenko
DOI:10.3987/com-09-11881
日期:——
Alkylation of 4,6-dimethy1-2-pyrimidineacetonitrile and 2,6-dimethyl-4-pyrimidineacetonitrile with chloroacetic acid anilides was shown to give 5-amino-4-(4,6-dimethyl-2-pyrimidinyl)-2,3-dihydro-1-arylpyrrol-2-ones and 5-amino-4-(2,6-dimethyl-4-pyrimidinyl)-2,3-dihydro-1-arylpyrrol-2-ones, respectively. Corresponding isomeric compounds, 5-amino-4-pyrimidinyl-2,3-dihydropyrrol-3-ones were obtained by Claisen condensation of the mentioned pyrimidineacetonitriles with N-Boc alpha-aminoacids imidazolides followed by removal of the protecting group accompanied with simultaneous ring closure.
3-[2(4)-Pyrimidinyl]coumarins and their condensed analogs
作者:T. V. Shokol、I. Yu. Nestorak、A. V. Turov、V. M. Gunko、Yu. M. Volovenko、V. P. Khilya
DOI:10.1007/s10593-010-0590-2
日期:2010.11
3-Pyrimidinylcoumarins have been synthesized by interacting 2- and 4-pyrimidinylacetonitriles with substituted salicylic aldehydes, but 9-pyrimidinylpyrano[2,3-f]chromene-4,8-diones were obtained with 8-formyl-7-hydroxychromones. Modification of the corresponding 7-hydroxycoumarins was carried out by acylation and aminomethylation.