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A facile one-pot synthesis of tetrahydropyrimidines part 3 Synthesis of [alkanediylbis(3-alkyl/aralkyl/aryl-3,6-dihydropyrimidine-1,5(2H)-diyl)bis(arylmethanones) and [1,4-phenylenebis(3-phenyl-3,6-dihydropyrimidine-1,5(2H)-diyl)]bis(phenylmethanone)

✍ Scribed by Milan CH. Dutta; Kaushik Chanda; Jai N. Vishwakarma

Publisher
Journal of Heterocyclic Chemistry
Year
2005
Tongue
English
Weight
39 KB
Volume
42
Category
Article
ISSN
0022-152X

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✦ Synopsis

A facile one-pot synthetic strategy has been developed for novel [alkanediylbis(3-alkyl/aralkyl/ aryl-3,6dihydropyrimidine-1,5(2H)-diyl)]bis(arylmethanones) 2a-c, 2e-m and [1,4-phenylenebis(3-phenyl-3,6dihydropyrimidine-1,5(2H)-diyl)]bis(phenylmethanone) 2d by refluxing enaminones 1a-f in methanol with diamines and formaldehyde.

📜 SIMILAR VOLUMES

A facile one-pot synthesis of novel subs
A facile one-pot synthesis of novel substituted 1,2,3,4-tetrahydropyrimidine, part 2: Synthesis of 1-(aralkyl/aryl)-3-(alkyl/aralkyl/aryl)-5-aroyl-1,2,3,4-tetrahydropyrimidines
✍ Kaushik Chanda; Milan Ch. Dutta; Enamul Karim; Jai N. Vishwakarma 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 106 KB 👁 1 views

## Abstract 1‐(Aralkyl/aryl)‐3‐(alkyyaralkyl)‐5‐aroyl‐1,2,3,4‐tetrahydropyrimidines (**2a‐c**) have been synthesized by dethiomethylation of 5‐aroyl‐6‐methylthio‐1,2,3,4‐tetrahydropyrimidines (**1a‐c**). An alternative one‐pot synthetic strategy has been developed for the title compounds **2a‐t** b

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
A Facile One-Pot Synthetic Route to Subs
A Facile One-Pot Synthetic Route to Substituted Fused Tetrahydropyrimidines. Part 4. Synthesis of 1-(Aralkyl/aryl)-3- (alkyl/aralkyl/aryl)-5-oxo-1,2,3,4,5,6,7,8-octahydroquinazolines and 1-(Aralkyl/aryl)-3- (alkyl/aralkyl/aryl) -7,7-dimethyl-5-oxo-1,2,3,4,5,6,7,8-octahydroquinazolines
✍ Kaushik Chanda; Milan C. Dutta; Jai N. Vishwakarma 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 18 KB 👁 2 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.

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