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Expeditious Microwave-Assisted Synthesis of Functionalized Oxaphosphaphenanthrenes and Chromenes via Multicomponent Reactions of Trivalent Phosphorus Nucleophiles

[ Vol. 15 , Issue. 10 ]

Author(s):

Zinatossadat Hossaini, Faramarz Rostami-Charati and Seyedeh Fereshteh Hayerizadeh   Pages 816 - 821 ( 6 )

Abstract:


Stable derivatives of oxaphosphaphenanthrenes were prepared by using the reactions of dialkyl acetylenedicarboxylate with 3-bromo-2-naphthol in the presence of trimethyl or triphenyl phosphite under microwave conditions at 70 °C in good yields. Under similar conditions, chromene derivatives were produced by using triethyl phosphite and dialkyl acetylenedicarboxylate in the presence of OH-acids in excellent yields

Keywords:

4-hydroxycoumarine, acetylenic compounds, chromenes, one-pot reactions, trimethyl phosphate, triphenyl phosphite.

Affiliation:

Department of Chemistry, Qaemshahr Branch, Islamic Azad University, P.O. Box 163, Qaemshahr, Iran



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