Abstract

Sara Hallajian¹, Eskandar Alipour¹, Naser Foroughifar¹ and Mohammad A. Khalilzadeh²

DOI : http://dx.doi.org/10.13005/ojc/300348

The reaction of dimethyl acetylenedicarboxylate with OH-acid such as 2-naphthol in the presence of trimethyl or triphenyl phosphite under solvent-free conditions produce oxaphosphaphenanthrene derivatives in good yields. Also, the reaction of dimethyl acetylenedicarboxylate and trimethyl phosphite in the presence of 1-naphthol  leads to succinate derivatives in excellent yields. Using triethyl phosphite and dimethyl acetylenedicarboxylate in the presence of 1-naphthol or 1-naphthol produces chromene-4-carboxylate derivatives in good yields.

Dimethyl acetylenedicarboxylate; Solvent-free conditions; oxaphosphaphenanthrene; 1-naphthol

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