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The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 11 . Synthesis and total assignment of the 1 H and 13 C NMR spectra of isomeric benzothienonaphthoquinolines using multiple inverse detected two‐dimensional NMR methods
Author(s) -
Luo JiannKuan,
Zektzer Andrew S.,
Castle Raymond N.,
Crouch Ronald C.,
Shockcor John P.,
Martin Gary E.
Publication year - 1993
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.5570300229
Subject(s) - heteronuclear molecule , chemistry , quinoline , ring (chemistry) , nuclear magnetic resonance spectroscopy , two dimensional nuclear magnetic resonance spectroscopy , stereochemistry , carbon 13 nmr , proton , spectroscopy , nmr spectra database , spectral line , organic chemistry , physics , quantum mechanics , astronomy
Two novel heterocyclic ring systems, namely, [1]benzothieno[2,3‐ c ]naphtho[1,2‐ f ]quinoline and [1]benzothieno[2,3‐ c ]naphtho[2,1‐ g ]quinoline have been synthesized and characterized by inverse detected two‐dimensional nmr methods. Unequivocal total assignments of the proton and carbon nmr spectra were made through the concerted utilization of HMQC (Heteronuclear Multiple Quantum Correlation) and a combination of HMBC (Heteronuclear Multiple Bond Correlation) and HMQC‐TOCSY (HMQC with proton TOtal Correlation Spectroscopy).