Recently, we reported a unique behavior of hydrazine hydrate towards certain benzofurans to produce phenolic-based pyrazoles .
The Reaction of DHPMs Esters 4a-h with Hydrazine Hydrate in Ethanol.
This catalyst was reused for further reaction runs in the synthesis of the parent hydrazine with equal molar quantities of 3-nitrophenylhydrazine (2 mmole) benzaldehyde (2 mmole) and Si[O.sub.2]-[H.sub.3]P[O.sub.4] (0.5 g) catalyst (entry 3a).
The multi-linear regression analyses of the vC=N (nm) stretching frequency values of all the (E)-1-benzylidene-2-(3-nitrophenyl) hydrazine compounds with inductive, resonance and Swain-Lupton's  F and R parameters produce satisfactory correlations as shown in equations (5) and (6).
It was important to consider that the type of the suitable base was dependent on the properties of the hydrazine
Investigation of the optimum concentration of phenyl hydrazine
for the spectrophotometric analysis of glucose Estimation of glucose was carried out as oxidized glucosazone which is a colored compound.
We investigated the influence of the structure of the substrate, arylboronic acid, and base on the yield of arylated hydrazines
Alkylation of protected hydrazines
with A-protected 3-bromopropyl amines Alkyl Alkyl bromide Yield, Compound carbazate % Fmoc Br[(C[H.sub.2]).sub.3]NHBoc 62 5 NHN[H.sub.2] Br[(C[H.sub.2]).sub.3]NHZ 65 6 Br[(C[H.sub.2]).sub.3]NHAloc 70 7 BocNH Br[(C[H.sub.2]).sub.3]NHFmoc 70 8 N[H.sub.2] Br[(C[H.sub.2]).sub.3]NHZ 59 9 ZNHN Br[(C[H.sub.2]).sub.3]NHBoc 39 10 [H.sub.2]
A mixture of 2-(phenylsulfonyl)-1-(4-tolyl)ethan-1-one (3) (0.55 g, 2 mmol) and hydrazine
hydrate (99%, 1.1 mmol) in glacial acetic acid (5mL) was added to a closed vessel in a microwave reactor.
reacts with trimethoxysilane in the presence of Pt[O.sub.2], which is a novel and efficient catalyst for hydrosilylation of aminoalkenes .
Moreover, the neat TEA-[N.sub.2]O propellant produces vacuum specific impulses and density specific impulses 7.1% and 13.1% lower than traditional hydrazine
propellant formulations, respectively.
All 65 patients received the same chemotherapy and dietary counseling, but some got 60 mg of oral hydrazine
sulfate, three times/day, and the rest took a placebo.