## Abstract Photocyclization of 3‐chloro‐__N__‐(3‐phenanthryl)naphtho[1,2‐__b__]thiophene‐2‐carboxamide (**12**) furnished only one of the two possible isomers, __i.e.__, naphtho[2′,1′:4,5]thieno[2,3‐__c__]naphtho[1,2‐__f__]quinolin‐6(5__H__)‐one (**13**), which was further elaborated to yield the
1H and 13C spectral assignment of naphtho[2′,1′:5,6]-naphtho[2′,1′:4,5]thieno[2,3-c]quinoline using the IDR-GHSQC-TOCSY experiment
✍ Scribed by Chad E. Hadden; Gary E. Martin; J.-K. Luo; Raymond N. Castle
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2000
- Tongue
- English
- Weight
- 306 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0022-152X
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✦ Synopsis
Abstract
The assignment of the NMR spectra of the polynuclear heteroaromatic naphtho[2′,1′:5,6]naphtho‐[2′,1′:4,5]thieno[2,3‐c]quinoline is reported. The analysis was based on the homonuclear ROESY, heteronuclear direct GHSQC, IDR‐GHSQC‐TOCSY, and long‐range GHMBC experiments. The complete ^1^H and ^13^C shift assignments are reported.
📜 SIMILAR VOLUMES
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
## Abstract Photocyclization of 3‐chloro‐N‐(3‐phenanthryl)thieno[2,3‐__b__]thiophene‐2‐carboxamide (5) yielded only one of the two possible structural isomers, thieno[3′,2′:4,5]thieno[2,3‐__c__]naphtho[1,2‐__f__]quinolin‐6(5__H__)‐one (6), which was further elaborated to afford the unsubstituted ri
## Abstract The ^1^H NMR spectrum of naphtho [1′,2′:4,5]thieno[2,3‐__c__]quinoline is highly congested because all the protons are in an aromatic environment, and the structure of the molecule is nearly symmetric. With this in mind, the assignment of the ^1^H and ^13^C NMR spectra of this compound
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
## Abstract A previously unknown heterocyclic ring system, naphtho[2′,1′:4,5]thieno[2,3‐__c__]naphtho[2,1‐__f__]quinoline (**14**), was synthesized __via__ oxidative photocyclization of 3‐chloro‐__N__‐(2‐phenanthryl)naphtho[1,2‐__b__]‐thiophene‐2‐carboxamide (**9**). Further elaboration of the lact