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Paper | Regular issue | Vol 24, No. 9, 1986, pp.2507-2510
Published online, 1st January, 1970
DOI: 10.3987/R-1986-09-2507
Synthesis of 2,2’-Ethylene-bis(1,2-dihydrobenzo[h]-3H-4,2-benzoxazine) and 3,3’-Ethylene-bis(3,4-dihydrobenzo[h]-2H-1,3-benzoxazine) and Assignation of Their 1H-NMR Spectra Using the LAOCN3 Computer Program

Augusto Rivera,* Edgar Ospina, Armando Sánchez, and Pedro Joseph-Nathan

*Departamento de Química, Universidad Nacional de Colombia, Ciudad Universitaria, Bogotá, Colombia

Abstract

Two new bis-benzoxazines, 2,2’-ethylene-bis(1,2-dihydrobenzo[h]-3H-4,2-benzoxazine) (I) and 3,3’-ethylene-bis(3,4-dihydrobenzo[h]-2H-1,3-benzoxazine) (II) were obtained by the Mannich reaction of β- and α-naphthol with formaldehyde and ethylendiamine. Their 1H-nmr spectra were simulated and interpretated using the LAOCN3 computer program.