A three-component synthesis of pyrido[2,3-d]pyrimidines
摘要:
A new, high yield multicomponent reaction providing multifunctionalized pyrido[2,3-d]pyrimidines in a microwave-assisted one-pot cyclocondensation of alpha,beta-unsaturated esters, amidine systems and malononitrile (or ethyl cyanoacetate) is described (the 'Victory' reaction). (C) 2003 Elsevier Science Ltd. All rights reserved.
A three-component synthesis of pyrido[2,3-d]pyrimidines
作者:Núria Mont、Jordi Teixidó、José I Borrell、C.Oliver Kappe
DOI:10.1016/s0040-4039(03)01306-6
日期:2003.7
A new, high yield multicomponent reaction providing multifunctionalized pyrido[2,3-d]pyrimidines in a microwave-assisted one-pot cyclocondensation of alpha,beta-unsaturated esters, amidine systems and malononitrile (or ethyl cyanoacetate) is described (the 'Victory' reaction). (C) 2003 Elsevier Science Ltd. All rights reserved.
A captured room temperature stable Wheland intermediate as a key structure for the orthogonal decoration of 4-amino-pyrido[2,3-<i>d</i>]pyrimidin-7(8<i>H</i>)-ones
作者:Iñaki Galve、Raül Ondoño、Claudi de Rocafiguera、Raimon Puig de la Bellacasa、Xavier Batllori、Cristina Puigjaner、Mercè Font-Bardia、Oriol Vallcorba、Jordi Teixidó、José I. Borrell
DOI:10.1039/d0ob01785j
日期:——
captured room temperature stable Wheland bromination intermediate stabilized by the bromination of the imino tautomer of the amino group at C4 of the pyridopyrimidine skeleton. The structure was confirmed by crystal structure determination from powder X-ray diffraction data. Treatment of 12 with DMSO afforded the dibromo substituted compound 13 presenting a bromine atom at C6 and C5–C6 unsaturation. 13 was