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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 28934Generated: October 29, 2026

tert-Butylhydrazine monohydrochloride → 1-tert-butyl-3-(4-nitrophenyl)-1H-pyrazole

https://huagongshe.com/reaction/28934

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-3-(4-nitrophenyl)-1H-pyrazoleHCID 53485528—

Reaction Steps

Following the procedure described for Intermediate 1 with t-butylhydrazine hydrochloride, provided the title compound as the minor isomer. ESMS (M-C(CH3)3+2H): 190.0; HNMR (400 MHz, d6-DMSO) δ 8.20 (d, 2H), 7.86 (d, 2H), 7.7 (d, 1H), 6.55 (d, 1H), 1.25 (s, 9H)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07419988B2
Source datasetuspto-grants-2008_09
ORD IDord-5b6cb64c9e6946b3b3a6c66e82f7b607
Source noteuspto-grants-2008_09