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All articles of this category A general method for the palladium(0)-catalyzed preparation of 4-arylpyrazoles 2 , by coupling of either 4-halopyrazoles 3 with arylstannanes 4 or 4-tributylstannyl-1-tritylpyrazole 5 with aryl iodides 6 , is reported. Deprotection of trityl and/or methyl groups in compounds 2 led to N -unsubstituted 4-arylpyrazoles 1 . 4-arylpyrazoles - 4-stannylpyrazoles - Pd(0) cross-coupling
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Elguero et al. (1997) studied this question.
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