Nitriles in heterocyclic synthesis: A novel route for the synthesis of naphthodipyrans, pyridines. 2<i>H</i>- and 4<i>H</i>-Pyrans

Elagamey, Abdel Ghani A.; El-Taweel, Fathy M. A.; Sowellim, Salah Z. A.; Sofan, Mamdouh A.; Elnagdi, Mohamed H.

doi:10.1135/cccc19900524

CCCC > Archive > 1990, Volume 55 > Issue 2 > p. 524

Nitriles in heterocyclic synthesis: A novel route for the synthesis of naphthodipyrans, pyridines. 2H- and 4H-Pyrans

Abdel Ghani A. Elagamey^a, Fathy M. A. El-Taweel^a, Salah Z. A. Sowellim^a, Mamdouh A. Sofan^a and Mohamed H. Elnagdi^b

^a Chemistry Department, Mansoura University, Damietta, Egypt
^b Chemistry Department, Cairo University, Cairo, Egypt

Abstract

Naphtho[2,1-b:5,6-b']dipyrans and naphtho[1,2-b:6,5-b']dipyrans were synthesized by the reaction of cinnamonitriles with 2,3-, 1,5-, 1,6-naphthalenediols, respectively. Polysubstituted pyridines, 2H-pyrans and 4H-pyrans were also synthesized from cinnamonitriles, 2-hydroxyacetophenone and 3-acetyl-4-hydroxy-1-methylcarbostyril, respectively.

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Nitriles in heterocyclic synthesis: A novel route for the synthesis of naphthodipyrans, pyridines. 2H- and 4H-Pyrans

Abstract