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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 40, 2009 - Issue 1
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Original Articles

Thiocyanation on N-Benzene Rings of 1,3,5-Trisubstituted Pyrazolines with Oxone

Guaili Wu State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, China; JiangSu HengRui Medicine Co. Ltd., Jiangsu, China
,
Ruirui Liang State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, China; JiangSu HengRui Medicine Co. Ltd., Jiangsu, China
,
Yongjiang Chen JiangSu HengRui Medicine Co. Ltd., Jiangsu, China
&
Longmin Wu State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, ChinaCorrespondence[email protected]
Pages 129-134 | Received 16 Jan 2009, Published online: 09 Dec 2009
 
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Abstract

An efficient aromatic thiocyanation of 1,3,5-trisubstituted pyrazolines occurred regioselectively at the para position of N-benzene rings using ammonium thiocyanate as a thiocyanation reagent and oxone as an oxidant.

ACKNOWLEDGMENT

Project 20572040 was supported by the National Natural Science Foundation of China.

Notes

a 1,3,5-Trisubstituted pyrazoles.

b Overoxidized by oxone; no product was formed.

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