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A study of some pyridopyrazines and pyridopyrimidines
Author(s) -
Peck Robert L.,
Day Allan R.
Publication year - 1969
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570060206
Subject(s) - pyrazine , quinolizidine , chemistry , pyrimidine , ring (chemistry) , infrared , spectral line , infrared spectroscopy , stereochemistry , crystallography , organic chemistry , optics , physics , quantum mechanics , alkaloid
The d‐ and l‐forms of 2 H ‐octahydropyrido[1,2‐a]pyrazine (I) have been prepared and their absolute configurations established. These configurations were confirmed by an optical rotary dispersion study. The infrared spectra of 2 H ‐octahydropyrido[1,2‐a]pyrazine (I), lH‐octahydropyrido[ 1,2‐a]pyrimidine (11) and 2H‐octahydropyrido[ 1,2‐c]pyrimidine (111) were compared with the infrared spectrum of quinolizidine. All of these spectra showed the Bohlmann bands characteristic of a trans ring structure. A few derivatives of these ring systems have been prepared.