An Improved Preparation of 4-Chloro-1 H-indazole

G Meng, T Yang, Y Liu

Index: Organic Preparations and Procedures International, , vol. 43, # 4 p. 354 - 359

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Abstract

... An Improved Preparation of 4-Chloro-1H-indazole. ... Unfortunately, these methods cannot be considered practical for multi-kilogram preparations for the following reasons. ... of THF in vacuo, the residue was extracted with ethyl acetate (50 mL × 3). The organic layers were combined ...