C07C241/02

Process for making 2,5-dihalogenated phenol

The present invention relates to a process for reacting chemical compounds comprising the step of reacting a compound of formula (IV) ##STR00001##
wherein Hal is independently selected from Cl or Br, and X.sup.? is a monovalent anion, in the presence of an inorganic acid, wherein the aqueous inorganic acid has a concentration of at least about 60%, at a temperature of about 140? C. to about 250? C., to obtain a compound of formula (V) ##STR00002##
wherein Hal is as defined above.

Process for making 2,5-dihalogenated phenol

The present invention relates to a process for reacting chemical compounds comprising the step of reacting a compound of formula (IV) ##STR00001##
wherein Hal is independently selected from Cl or Br, and X.sup.? is a monovalent anion, in the presence of an inorganic acid, wherein the aqueous inorganic acid has a concentration of at least about 60%, at a temperature of about 140? C. to about 250? C., to obtain a compound of formula (V) ##STR00002##
wherein Hal is as defined above.

HETEROBIDENTATE IMIDAZO[1,5-A]PYRIDINE AND IMIDAZO[1,5-A]QUINOLINE N-HETEROCYCLIC CARBENE (NHC) LIGANDS, CATALYST COMPLEXES THEREOF, AND METHODS USING SAME
20240383894 · 2024-11-21 ·

The present disclosure provides N-heterocyclic carbene ligands, catalyst complexes thereof, and methods using same. The present disclosure further provides synthetic methods of preparing the N-heterocyclic carbene ligands and catalyst complexes disclosed herein.

HETEROBIDENTATE IMIDAZO[1,5-A]PYRIDINE AND IMIDAZO[1,5-A]QUINOLINE N-HETEROCYCLIC CARBENE (NHC) LIGANDS, CATALYST COMPLEXES THEREOF, AND METHODS USING SAME
20240383894 · 2024-11-21 ·

The present disclosure provides N-heterocyclic carbene ligands, catalyst complexes thereof, and methods using same. The present disclosure further provides synthetic methods of preparing the N-heterocyclic carbene ligands and catalyst complexes disclosed herein.

Process for Making 2,5-Dihalogenated Phenol

The present invention relates to a process for reacting chemical compounds comprising the step of reacting a compound of formula (IV) wherein Hal is independently selected from CI or Br, and X is a monovalent anion, in the presence of an inorganic acid, wherein the aqueous inorganic acid has a concentration of at least about 60%, at a temperature of about 140 C. to Cabout 250 C., to obtain a compound of formula (V) wherein Hal is as defined above.

##STR00001##

Process for Making 2,5-Dihalogenated Phenol

The present invention relates to a process for reacting chemical compounds comprising the step of reacting a compound of formula (IV) wherein Hal is independently selected from CI or Br, and X is a monovalent anion, in the presence of an inorganic acid, wherein the aqueous inorganic acid has a concentration of at least about 60%, at a temperature of about 140 C. to Cabout 250 C., to obtain a compound of formula (V) wherein Hal is as defined above.

##STR00001##

METHODS AND SYSTEMS FOR NEUTRALIZATION OF HYDRAZINE

Methods of and systems for remediating hydrazine spills, solutions, and hydrazine-contaminated objects including areas thereof comprise reacting 1,1-Dimethylhydrazine with -ketoacids and adding a reducing agent to the reaction of 1,1-Dimethylhydrazine with said -ketoacids.

METHODS AND SYSTEMS FOR NEUTRALIZATION OF HYDRAZINE

Methods of and systems for remediating hydrazine spills, solutions, and hydrazine-contaminated objects including areas thereof comprise reacting 1,1-Dimethylhydrazine with -ketoacids and adding a reducing agent to the reaction of 1,1-Dimethylhydrazine with said -ketoacids.