1,3,5-Trichlorobenzene → 3,5-Dichlorophenylhydrazine

Temperatur

180 °C

A mixture of 1,3,5-trichlorobenzene (2.53 g), hydrazine hydrate (3.48 g, 5 molar equivalents) and pyridine (12 ml) was heated in an autoclave (purged with argon) for 6 hours at 180° C. The mixture was cooled, the excess hydrazine decanted and the organic phase evaporated in vacuo to give the title compound in 60% yield. It was shown that 65% of the starting material had been consumed, thus indicating that the reaction had occurred with high selectivity.

1. temperatureThe mixture was cooled
2. customthe excess hydrazine decanted
3. customthe organic phase evaporated in vacuo

ORD-Eintrag

ord-3e6a2dccd2424f91bb0356d383f5ee0e

Quelldatensatz

uspto-grants-2003_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06509503B1