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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 28933Generated: October 29, 2026

tert-Butylhydrazine monohydrochloride → 1-tert-Butyl-5-(4-nitrophenyl)-1H-pyrazole

https://huagongshe.com/reaction/28933

Reaction equation

Participants

RoleNameHCIDCharge
Reactanttert-Butylhydrazine monohydrochlorideHCID 81889—
Reactant1,1-dimethylethyl [3-(4-nitrophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]acetateHCID 86617390—
Product1-tert-Butyl-5-(4-nitrophenyl)-1H-pyrazoleHCID 53485527—

Reaction Steps

Following the procedure described for Intermediate 1 with t-butylhydrazine hydrochloride, provided the title compound as the major isomer (80%). ESMS (M-C(CH3)3+2H): 190.0; HNMR (400 MHz, d6-DMSO) δ 8.32 (d, 2H), 7.7 (d, 2H), 7.48 (d, 1H), 6.25 (d, 1H), 1.42 (s, 9H)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07419988B2
Source datasetuspto-grants-2008_09
ORD IDord-c1e9681fb1d646448f308a1fe43670f9
Source noteuspto-grants-2008_09