Methylamination of some 3-nitro-1,8-naphthyridines with liquid methylamine/potassium permanganate

Liebigs Annales

Volumn , Issue 12, 1997, Pages 2601-2605

  Woźniak, Marian ^a   Grzegozek, Maria ^a   Surylo, Piotr ^a  

^a CRACOW UNIVERSITY OF TECHNOLOGY   (Poland)

Author keywords

1,8 Naphthyridines; Calculations, PM3; Methylaminations; Nitro compounds

Indexed keywords

EID: 33748988502     PISSN: 09473440     EISSN: None     Source Type: Journal    
DOI: 10.1002/jlac.199719971227     Document Type: Article

References (16)

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12. The PM3 method was used for the semiempirical MO calculations using the MOPAC (version 6) molecular orbital package. The starting geometries and intermediary structures were obtained from the corresponding molecular models, fully optimized using keyword PRECISE. The transition states TS were calculated using a SADDLE suboutine. An NLLSQ procedure was used for gradient optimization (< 0.1 kcal/mol/A). Calculations were performed until at least one negative Hessian was obtained. The THERMO procedure was used to correct the results of calculations for temperature 266 K.
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