I2–TBHP-Catalyzed Oxidative Cross-Coupling of N‑Sulfonyl Hydrazones and Isocyanides to 5‑Aminopyrazoles
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I2–TBHP-catalyzed oxidative cross coupling of N-sulfonyl hydrazones with isocyanides has been realized for the synthesis of 5-aminopyrazoles through formal [4 + 1] annulation via in situ azoalkene formation. Notable features are the metal/alkyne-free strategy, C–C and C–N bond formation, atom economy, catalytic I2, broad functional group tolerance, good reaction yields, shorter time, and also applicability to one-pot methodology.
创建时间：
2016-02-14
