Citation: Shrong Shi LIN, Jian Mei WANG, Cheng Yong LI. The Reactivity of 2,4,6-Tirphenylpyridinium Ylids[J]. Chinese Chemical Letters, ;2003, 14(2): 111-114. shu

The Reactivity of 2,4,6-Tirphenylpyridinium Ylids

Department of Chemistry, Peking University, Beijing 100871

Received Date: 11 January 2002

Fund Project: We want to express our sincere appreciation to Professor Joe Wilson of University of Kcnlucky and Professor Xiulin Ye of Peking University for ihcir favorable suggestions and assistance for the workWe are also grateful to the National Natural Science Foundation of China (No.20272001) for the financial support.

Triphenylpyridinium ylid 2, generated by the decarboxylation of betaine 1, were noted to react with acetyl chloride, chloroform or acetone to form addition-elimination product and proton extraction-carbanion addition products, respectively.The reaction with chloroform was determined as pseudo first order from kinetic experiments.The values of k_obsd and t_1/2 for decarboxylation at 20, 40 and 50℃ were calculated to be 4.6×10^-4, 8.8×10^-3, 2.8×10^-2min^-1 and 1.5×10³, 78, 24 minutes, respectively.
- Pyridinium ylid,
- pyridinium betaine,
- 4-H pyridine,
- kinetic experiment
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