Maher CHERIF, Mariem DEBBABI, Sarra CHORTANI, Anis ROMDHANE, Hichem Ben JANNET

250208

Design and synthesis of new naphtho[2,1-$b$]pyrano [2,3-$d$]pyrimidinones under classical and microwave conditions

A fast and efficient method for the synthesis of naphthopyranopyrimidinones derivatives in excellent yields was developed through cyclocondensation reaction between previously prepared pyrimidinic hydrazides and some electrophilic species such as 2,4-pentanedione, 2,5-hexanedione, cyclic anhydrides, and phenylthioisocyanate under microwave irradiation. Compared to the conventional methods applied, it was found that better yields and shorter reaction times were achieved using microwave-assisted synthesis. Structures of all synthesized compounds were established on the basis of spectroscopic methods including $^{1}$H NMR, $^{13}$C NMR, and HRMS-ES.
Keywords:

Pyrimidinic hydrazides, cyclocondensation, naphthopyranopyrimidinones derivatives, conventional synthesis, microwave-assisted synthesis,

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Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
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