NEW METHODS AND REAGENTS IN ORGANIC SYNTHESIS. 41. LITHIUM TRIMETHYLSILYLDIAZOMETHANE. A NEW SYNTHON FOR THE PREPARATION OF PYRAZOLES FROM α,β-UNSATURATED NITRILES

Article abstract of DOI:10.1016/S0040-4039(00)99904-0

Lithium trimethylsilyldiazomethane reacts smoothly with various α,β-unsaturated nitriles to give 3(or 5)-trimethylsilylpyrazoles in good yields.