A 3-step synthesis of the biologically active metabolites (2 and 3) of imidacloprid from aminoacetaldehyde diethyl acetal or ethylenediamine was developed. A series of new imidacloprid analogues were also prepared.
Mono- and di-(2-nitroguanidino)benzenes and some of their amino and nitro derivatives
摘要:
A method was developed for the synthesis of mono- and di-(2-nitroguanidino)benzenes and some of their amino and nitro derivatives, based on the reaction of aniline and phenylenediamines with S-methylisothionitrourea, followed by oxidation of the aminophenol-2-nitroguanidines or by nitration of aryl-2-nitroguanidines. It was shown that o-phenylenediamine reacts with S-methylisothionitrourea to form 2-nitraminobenzimidazole.
A water-soluble dye, free from cellulose reactive groups, of the formula:
wherein
R' is -(CaH2aO)m(CbH2bO)nH,
R2 is H or -(CaH2aO)m(CbH2bO)nH, or
R1 & R2 together with the nitrogen atom form a morpholine ring
a & b are different and from 1 to 8
m is from 1 to 10;
n is from 0 to 9;
X is the residue of a diazotisable amine
Y is NR'R2 or non-chromophoric groups OR3 or NR3R4 in which R3 and R" are independently selected from H, alkyl and aryl. and
Z is:
wherein
M is a monovalent cation, and an ink containing the dye suitable for use in an ink jet printing process.
一种不含纤维素活性基团的水溶性染料,其式如下
其中
R' 是-(CaH2aO)m(CbH2bO)nH、
R2 是 H 或-(CaH2aO)m(CbH2bO)nH,或
R1 和 R2 与氮原子一起形成一个吗啉环
a 和 b 不相同,且在 1 到 8 之间
m 为 1 至 10
n 为 0 至 9;
X 是可重氮胺的残余物
Y 是 NR'R2 或非色素基团 OR3 或 NR3R4,其中 R3 和 R "独立选自 H、烷基和芳基。
Z 是
其中
M 是一价阳离子,以及含有适合用于喷墨打印工艺的染料的墨水。