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Regioselective synthesis of pentacyclic heterocycles by sequential [3,3] sigmatropic rearrangement of 2-(4′-aryloxybut-2′-ynyl-mercapto)thiochromen-4-ones

✍ Scribed by K.C Majumdar; A Bandyopadhyay; A Biswas

Book ID
104205447
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
156 KB
Volume
59
Category
Article
ISSN
0040-4020

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📜 SIMILAR VOLUMES

Regioselective Synthesis of Pentacyclic
Regioselective Synthesis of Pentacyclic Polyheterocycles: Sequential [3,3] Sigmatropic Rearrangement of 4-(4′-Aryloxybut-2′-ynyloxy)-1-phenyl-1,8-naphthyridin-2(1H)-ones.
✍ Krishna C. Majumdar; Rafique-ul-Islam Rafique-ul-Islam 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 24 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Regioselective synthesis of pentacyclic
Regioselective synthesis of pentacyclic polyheterocycles: Sequential [3,3] sigmatropic rearrangement of 4-(4′-aryloxybut-2′-ynyloxy)-1-phenyl-1,8-naphthyridin-2(1H)-ones
✍ Krishna C. Majumdar; Rafique-ul-Islam 📂 Article 📅 2007 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 353 KB

## Abstract magnified image A number of 4‐aryloxymethyl‐6‐phenyl‐2__H__‐pyrano[3,2‐__c__][1,8]naphthyridin‐5(6__H__)‐ones (**4a‐f**) are regioselectively synthesized in 72‐78% yield by the Claisen rearrangement of 4‐(4′‐aryloxybut‐2′‐ynyloxy)‐1‐phenyl‐1,8‐naphthyridin‐2(1__H__)‐ones (**3a‐f**) in