✦ LIBER ✦

Cross-coupling of 1-aryl-5-bromopyrazoles: regioselective synthesis of 3,5-disubstituted 1-arylpyrazoles

✍ Scribed by Xiao-jun Wang; Jonathan Tan; Karl Grozinger

Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 160 KB
Volume: 41
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)00704-8

No coin nor oath required. For personal study only.

✦ Synopsis

The cross-coupling of 1-aryl-5-bromopyrazoles 4 with alkynes, vinyltins and arylboronic acids promoted by Pd(PPh 3 ) 4 aorded unsymmetrical 3,5-disubstituted 1-arylpyrazoles 5-8 in excellent yields. 1-Aryl-5bromopyrazoles 4 were prepared from their corresponding 1-arylpyrazolones 3 with PBr 3 in re¯uxing acetonitrile.

📜 SIMILAR VOLUMES

ChemInform Abstract: Cross-Coupling of 1

ChemInform Abstract: Cross-Coupling of 1-Aryl-5-bromopyrazoles: Regioselective Synthesis of 3,5-Disubstituted 1-Arylpyrazoles.

✍ Xiao-jun Wang; Jonathan Tan; Karl Grozinger 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

ChemInform Abstract: Regioselective Synt

ChemInform Abstract: Regioselective Synthesis of Unsymmetrical 3,5-Dialkyl-1-arylpyrazoles.

✍ Xiao-jun Wang; Jonathan Tan; Li Zhang 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 33 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

Synthesis of 1,5-disubstituted tetrazole

Synthesis of 1,5-disubstituted tetrazoles via Suzuki–Miyaura cross-coupling of 5-chloro-1-phenyltetrazole

✍ Qing Tang; Ryan Gianatassio 📂 Article 📅 2010 🏛 Elsevier Science 🌐 French ⚖ 609 KB

ChemInform Abstract: Regioselective Rapi

ChemInform Abstract: Regioselective Rapid Analogue Synthesis of 1,3-(or 1,5-)Diphenyl-4-aryl/heteroaryl-5-(or 3-)(methylthio)pyrazoles via Suzuki Cross-Coupling.

✍ Taukeer A. Khan; Sarvesh Kumar; Chelvam Venkatesh; Hiriyakkanavar Ila 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 39 KB 👁 1 views

## Abstract Cross‐coupling of the bromides or iodides of the substituted isomeric diphenyl(methylthio)pyrazoles with a wide range or aromatic and heteroaromatic boronic acids tolerates many functional groups and affords the products with high yields.

ChemInform Abstract: Synthesis of 1,5-Di

ChemInform Abstract: Synthesis of 1,5-Disubstituted Tetrazoles via Suzuki—Miyaura Cross-Coupling of 5-Chloro-1-phenyltetrazole.

✍ Qing Tang; Ryan Gianatassio 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 40 KB 👁 1 views

Highly Regioselective Synthesis of 1-Ary

Highly Regioselective Synthesis of 1-Aryl-3,4,5-Substituted Pyrazoles.

✍ Francis Gosselin; Paul D. O'Shea; Robert A. Webster; Robert A. Reamer; Richard D 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 25 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.