A novel heterocycle, 1,2,5-oxadiazolo-[3,4-e]pyrrolo[1,2-a]pyrazine

ChemInform Abstract: A Novel Heterocycle

ChemInform Abstract: A Novel Heterocycle, 1,2,5-Oxadiazolo[3,4-e]pyrrolo[1,2-a]pyrazine

✍ T. V. Moskovkina; V. A. Kaminskii 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 26 KB 👁 1 views

## 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

Syntheses of 2,3-dicyano-5a,8a-dihydro-5

Syntheses of 2,3-dicyano-5a,8a-dihydro-5a-hydroxycyclopentano[1′,2′:4,5]pyrrolo[2,3-b]pyrazines and 2,3-dicyanocyclohexano[1′,2′:4,5]pyrrolo-[2,3-b]pyrazines

✍ Kazuko Shirai; Koushi Fukunishi; Dongfeng Hou; Masaru Matsuoka 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 450 KB 👁 1 views

## Abstract Previously synthesized 2‐(3′‐chloro‐5′,6′‐dicyanopyrazin‐2′‐yl)cyclopentan‐1‐one **1**, obtained from the reaction of 2,3‐dichloro‐5,6‐dicyanopyrazine with 1‐pyrrolidino‐1‐cyclopentene, was further reacted with primary alkylamines to give mixtures of diastereomer of 5‐alkyl‐2,3‐dicyano‐

New fused pyrazines. Synthesis of pyrido

New fused pyrazines. Synthesis of pyrido[3′,2′:4,5]-thieno[2,3-e]pyrrolo[1,2-a]pyrazine derivatives

✍ H. S. El-Kashef; A. M. Kamal El-Dean; A. A. Geies; J. C. Lancelot; P. Dallemagne 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 398 KB 👁 1 views

## Abstract The synthesis of the title compounds was achieved using the key intermediate ethyl 4,6‐dimethyl‐3‐(pyrrol‐1‐yl)thieno[2,3‐__b__]pyridine‐2‐ carboxylate 2. This latter compound was obtained __via__ the interaction of the thienopyridine amino ester 1 with 2,5 dimethoxytetrahydrofuran in a

4H,8H-bis(1,2,5-oxadiazolo)[3,4-b:3',4'-

4H,8H-bis(1,2,5-oxadiazolo)[3,4-b:3',4'-e]Pyrazine

✍ I. B. Starchenkov; V. G. Andrianov 📂 Article 📅 1996 🏛 Springer US 🌐 English ⚖ 64 KB

ChemInform Abstract: Syntheses of 2,3-Di

ChemInform Abstract: Syntheses of 2,3-Dicyano-5a,8a-dihydro-5a-hydroxycyclopentano[1′,2′:4,5]pyrrolo [2,3-b]pyrazines and 2,3-Dicyanocyclohexano[1′,2′:4,5]pyrrolo[2,3-b]pyrazines.

✍ Kazuko Shirai; Dongfeng Hou; Koushi Fukunishi; Masaru Matsuoka 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 32 KB 👁 1 views

## 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

Pyrazoles and pyrazolo[4,3-e]pyrrolo[1,2

Pyrazoles and pyrazolo[4,3-e]pyrrolo[1,2-a]pyrazines II

✍ Abdel-Rahman Farghaly; Hussein El-Kashef 📂 Article 📅 2011 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 138 KB

## Abstract Synthesis of the title compounds was achieved using the anils **2a**, **2b**, **2c**, **2d**, **2e** and **5a**, **5b**, **5c** derived from the 4‐aminopyrazole **1** as starting materials. These compounds were allowed to react with mercaptoacetic acid in boiling dry benzene to afford t