摘要:
A method for producing highly pure enamines, which comprises reacting an aldehyde or ketone with an amine and treating the resulting reaction mixture with an acidic aqueous solution at a temperature between 0° C. and 30° C.
摘要:
The present invention provides a method for treating industrial wastewater containing milbemycin compounds or avermectin compounds such as a culture filtrate generated after microbial production of milbemycins and avermectins efficiently, safety and at low running costs. This method removes milbemycin compounds or avermectin compounds by treating industrial wastewater containing at least one compound selected from the group consisting of milbemycin compounds and avermectin compounds with active sludge.
摘要:
A method for producing highly pure enamines, which comprises reacting an aldehyde or ketone with an amine and treating the resulting reaction mixture with an acidic aqueous solution at a temperature between 0° C. and 30° C.
摘要:
An intermediate useful in the synthesis of milbemycin derivatives having an ether bond at the 13-position and which is represented by the general formula (IIId): ##STR1## wherein R represents a methyl group, an ethyl group, an isopropyl group or a sec-butyl group, and R.sup.5 and R.sup.6' each individually represents a hydrogen atom or a protecting group,and related precursors as well as to a process for producing these intermediates.
摘要:
A process for the production of a γ-ketoacetal compound wherein the desired product is obtained by a simple procedure in a high yield as a high purity product. The reaction scheme for the process is as follows: wherein Ar is an aryl group; X is a halogen atom; Ra and Rb is an alkyl or alkoxy group; and W is an alkylene group.
摘要翻译:制备γ-酮缩醛化合物的方法,其中通过简单的方法以高产率获得所需产物作为高纯度产物。 该方法的反应方案如下:其中Ar为芳基; X是卤原子; R a和R b都是烷基或烷氧基; W是亚烷基。
摘要:
A process for the production of a γ-ketoacetal compound wherein the desired product is obtained by a simple procedure in a high yield as a high purity product. The reaction scheme for the process is as follows: wherein Ar is an aryl group; X is a halogen atom; Ra and Rb is an alkyl or alkoxy group; and W is an alkylene group.
摘要翻译:制备γ-酮缩醛化合物的方法,其中通过简单的方法以高产率获得所需产物作为高纯度产物。 该方法的反应方案如下:其中Ar为芳基; X是卤原子; R a和R b都是烷基或烷氧基; W是亚烷基。
摘要:
An intermediate useful in the synthesis of milbemycin derivatives having an ether bond at the 13-position and which is represented by the general formula (IIId): ##STR1## wherein R represents a methyl group, an ethyl group, an isopropyl group or a sec-butyl group, and R.sup.5 and R.sup.6' each individually represents a hydrogen atom or a protecting group,and related precursors as well as to a process for producing these intermediates.