申请人:Eastman Kodak Company
公开号:US05166378A1
公开(公告)日:1992-11-24
Mono-acylated hydrazines are prepared in high yield by reaction of a hydrazine salt with an azole derivative of acyl halide in the presence of a strong base. Useful hydrazine salts include those of the formula RNHNH.sub.2 .multidot.HX, where R is alkyl, aryl, aralkyl, acyl, aroyl, heterocyclic or heteroaryl, and HX is a mineral or organic acid. Useful azole derivatives include those of the formula R'CO--A, where R' is alkyl, aryl, aralkyl, heterocyclic or heteroaryl and A is an azole radical such as pyrrole, imidazole, pyrazole, triazole, tetrazole, indole or benzimidazole.
通过在强碱存在下,将一种含有杂环基团的酰卤衍生物与一种肼盐反应,可以高产得到单酰基肼。有用的肼盐包括式为 RNHNH.sub.2.multidot.HX 的盐,其中 R 是烷基、芳基、芳基烷基、酰基、芳酰基、杂环基或杂芳基,HX 是矿物质或有机酸。有用的杂环基团包括式为 R'CO--A 的基团,其中 R' 是烷基、芳基、芳基烷基、杂环基或杂芳基,A 是吡咯、咪唑、吡唑、三唑、四唑、吲哚或苯并咪唑等杂环基团。