✦ LIBER ✦

Pyrylium salts in the synthesis of 2-pyrazoline derivatives and earlier unknown substituted 3,3a,4,7-tetrahydropyrazolo[1,5-a]pyridin-7-ones

✍ Scribed by L. Yu. Ukhin

Publisher: Springer
Year: 2007
Tongue: English
Weight: 240 KB
Volume: 56
Category: Article
ISSN: 1573-9171
DOI: 10.1007/s11172-007-0324-5

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

ChemInform Abstract: Pyrylium Salts in t

ChemInform Abstract: Pyrylium Salts in the Synthesis of 2-Pyrazoline Derivatives and Earlier Unknown Substituted 3,3a,4,7-Tetrahydropyrazolo[1,5-a]pyridin-7-ones.

✍ L. Yu. Ukhin 📂 Article 📅 2008 🏛 John Wiley and Sons ⚖ 28 KB 👁 1 views

A Facile One-Pot Synthesis of Novel Subs

A Facile One-Pot Synthesis of Novel Substituted 1,2,3,4-Tetrahydropyrimidines. Part 5. Synthesis of Bis[(1-alkyl/aralkyl) -5-benzoyl-6-methylthio-1,2,3,4-tetrahydropyrimidinyl]alkane and Benzene, Bis[3-phenyl-7-methyl-4,5,6,7-tetrahydropyrazolo [3,4-d]pyrimidinyl]alkane and Bis[1-benzyl-7-phenyl-1,2,3,4-tetrahydropyrazolo[1,5-a]triazinyl]alkane and Benzene.

✍ Milan Ch. Dutta; Kaushik Chanda; Philippe Helissey; Jai N. Vishwakarma 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 25 KB 👁 1 views

Synthesis and Transformations of 5-Subst

Synthesis and Transformations of 5-Substituted 2-Aryl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazin-7-ones and 2-Aryl-2,3-dihydro-4H-[1,3]thiazino[3,2-a]benzimidazol-4-ones.

✍ V. N. Britsun; A. N. Esipenko; A. N. Chernega; M. O. Lozinskii 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 25 KB 👁 1 views

Synthesis and Transformations of 5-Subst

Synthesis and Transformations of 5-Substituted 2-Aryl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazin-7-ones and 2-Aryl-2,3-dihydro-4H-[1,3]thiazino[3,2-a]benzimidazol-4-ones

✍ V. N. Britsun; A. N. Esipenko; A. N. Chernega; M. O. Lozinskii 📂 Article 📅 2005 🏛 SP MAIK Nauka/Interperiodica 🌐 English ⚖ 174 KB

Ultrasonic Irradiated Synthesis and Herb

Ultrasonic Irradiated Synthesis and Herbicidal Activities of 5,7-Disubstituted-2-(substituted pyridine-3-formylimino)-2H-1,2,4-thiadiazolo[2,3-a]pyrimidine Derivatives.

✍ Sijia Xue; Shaoyong Ke; Liping Duan; Xiuhua Wang; Yanling Guo 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 21 KB 👁 1 views

A facile one-pot synthesis of novel subs

A facile one-pot synthesis of novel substituted 1,2,3,4-tetrahydropyrimidines Part 5 : Synthesis of bis[(l-alkyl/aralkyl)-5-benzoyl-6-methylthio-1,2,3,4-tetrahydropyrimidinyl]alkane and benzene, bis[3-phenyl-7-methyl-4,5,6,7-tetrahydropyrazolo[3,4-d]-pyrimidinyl]alkane and bis[1-benzyl-7-phenyl-1,2,3,4-tetrahydro-pyrazolo[1,5-a]triazinyl]alkane and benzene

✍ Milan Ch. Dutta; Kaushik Chanda; Jai N. Vishwakarma; Philippe Helissey 📂 Article 📅 2005 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 70 KB

## Abstract Bis‐1,2,3,4‐tetrahydropyrimidinylalkanes/benzenes **2a‐f** have been synthesized by the reaction of N,S‐acetals with formaldehyde and diamines. Reaction of pyrazoles **3a** and **3b** with diamines and formaldehyde yield bis‐4,5,6,7‐tetrahydropyrazolo[3,4‐__d__]pyrimidinylalkanes **4a‐b