Synthesis and Reactions of 1‐Methyl‐5‐tributylstannyl‐4‐trifluoromethylpyrazole.

Abstract

zole. -A new method for the preparation of target compound (VI) is presented. Its further electrophilic substitution reactions with a variety of aldehydes, ketones, isocyanate and S-phenyl benzenethiosulfate is studied. Attempts to react (VI) with Me2N-CHO and methyl cyanoacetate fail. -(HANAMOTO*, T.; EGASHIRA, M.; ISHIZUKA, K.; FURUNO, H.; INANAGA, J.; Tetrahedron 62 (2006) 26, 6332-6338; Dep. Chem. Appl. Chem., Fac. Sci. Eng., Saga Univ., Honjo, Saga 840, Japan; Eng.) -Y. Steudel 41-107