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Hypervalent Iodine in Synthesis: A Novel Two‐Step Procedure for the Synthesis of New Derivatives of 1 H ‐Imidazo[1,2‐b]‐pyrazole by the Cyclocondensation Between 5‐Amino‐4‐cyano‐3‐phenyl‐1 H ‐pyrazole and α‐Tosyloxyacetophenones or α‐Haloacetophenones

✍ Scribed by Ming, Li; Guilong, Zhao; Lirong, Wen; Huazheng, Yang

Book ID: 118171276
Publisher: Taylor and Francis Group
Year: 2005
Tongue: English
Weight: 103 KB
Volume: 35
Category: Article
ISSN: 0039-7911
DOI: 10.1081/scc-200049761

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Hypervalent Iodine in Synthesis: A Novel

Hypervalent Iodine in Synthesis: A Novel Two-Step Procedure for the Synthesis of New Derivatives of 1H-Imidazo[1,2-b]pyrazole by the Cyclocondensation Between 5-Amino-4-cyano-3-phenyl-1H-pyrazole and α-Tosyloxyacetophenones or α-Haloacetophenones.

✍ Ming Li; Guilong Zhao; Lirong Wen; Huazheng Yang 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 20 KB 👁 1 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Utilization of Hypervalent Iodine in Org

Utilization of Hypervalent Iodine in Organic Synthesis: A Novel and Facile Two-Step Protocol for the Synthesis of New Derivatives of 1H-Imidazo[1,2-b]pyrazole by the Cyclocondensation Involving α-Tosyloxyacetophenones.

✍ Ming Li; Guilong Zhao; Lirong Wen; Wei Cao; Shusheng Zhang; Huazheng Yang 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 22 KB 👁 2 views

Utilization of hypervalent iodine in org

Utilization of hypervalent iodine in organic synthesis: A novel and facile two-step protocol for the synthesis of new derivatives of 1H-Imidazo[1,2-b]pyrazole by the cyclocondensation involving α-Tosyloxyacetophenones

✍ Ming Li; Huazheng Yang; Guilong Zhao; Lirong Wen; Wei Cao; Shusheng Zhang 📂 Article 📅 2005 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 119 KB 👁 1 views

A series of new 2-aryl-7-cyano/ethoxycarbonyl-6-methylthio-1H-imidazo[1,2-b]pyrazoles (5) have been synthesized in moderate to good yields, via a two-step cyclocondensation procedure of 5-amino-4cyano/ethoxycarbonyl-3-methylthio-1H-pyrazole (1) and α-bromoacetophenones (3) or α-tosyloxyacetophenones