摘要:
The invention relates to a method for producing 2-(3-pyrazolyl-oxymethylene) nitrobenzene derivatives of formula (I), wherein the substituents and indices have the meaning given in the Description, by bromination of an o-nitrotoluene of formula (II) and subsequent reaction with a 3-hydroxypyrazol of formula (IV).
摘要:
The invention relates to a method for producing N-acylated (hetero)aromatic hydroxylamine derivatives of formula (I), wherein the substituents, the ring atom and the index have the meanings given in the Description, by hydrogenating a (hetero)aromatic nitro-compound of general formula (II) in the presence of a hydrogenation catalyst.
摘要:
The invention relates to a method for the continuous production of methoxyamine hydrochloride by dissociating acetone oxime dimethyl ether with hydrogen chloride and water. The inventive method is characterized by carrying out the dissociation step in a reactor column of less than 20 theoretical steps of separation and adjusting the overhead removal amount to at least 30 % of the quantity supplied.
摘要:
The invention relates to a method for the continuous production of methoxyamine hydrochloride by dissociating acetone oxime dimethyl ether with hydrogen chloride and water. The inventive method is characterized by carrying out the dissociation step in a reactor column of less than 20 theoretical steps of separation and adjusting the overhead removal amount to at least 30 % of the quantity supplied.
摘要:
The invention relates to a method for producing N-acylated (hetero)aromatic hydroxylamine derivatives of formula (I), wherein the substituents, the ring atom and the index have the meanings given in the Description, by hydrogenating a (hetero)aromatic nitro-compound of general formula (II) in the presence of a hydrogenation catalyst.
摘要:
The invention concerns a process for preparing 2-(2-methylphenyl)-3-methoxyacrylic acid methylester (I) by formylating 2-methylphenylacetic acid methylester (II) in an inert solvent in the presence of a base, and subsequent methylation of the resultant enolate (III) in which M stands for an alkali metal cation.
摘要:
The invention relates to a method for producing 2-(3-pyrazolyl-oxymethylene) nitrobenzene derivatives of formula (I), wherein the substituents and indices have the meaning given in the Description, by bromination of an o-nitrotoluene of formula (II) and subsequent reaction with a 3-hydroxypyrazol of formula (IV).
摘要:
The invention concerns a process for preparing 2-(2-methylphenyl)-3-methoxyacrylic acid methylester (I) by formylating 2-methylphenylacetic acid methylester (II) in an inert solvent in the presence of a base, and subsequent methylation of the resultant enolate (III) in which M+ stands for an alkali metal cation.