公开(公告)号：EP0879816A1

公开(公告)日：1998-11-25

申请号：EP98303952.0

申请日：1998-05-19

申请人： Yamamoto Chemicals, Inc.

发明人： Sasaki, Nobuaki ,  Sawano, Bunji ,  Matsumoto, Mansuke ,  Kawabata, Toshihiko

IPC分类号： C07C303/40 ,  C07C311/60

CPC分类号： C07C303/40 ,  C07C311/60

摘要： The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the invention for producing an arylsulfonylureide compound of general formula (1)

        (Ar 1 -SO 2 NHCONH) n -Ar 2      (1)

wherein Ar 1 represents an aromatic residue; Ar 2 represents a bivalent or trivalent aromatic residue; n represents an integer of 2 or 3 comprises reacting an arylsulfonamide alkali metal salt of general formula (2)

        Ar 1 -SO 2 NH·B     (2)

wherein B represents an alkali metal with an aromatic isocyanate compound of general formula (3)

        Ar 2 -(NCO) n      (3)

in at least one solvent selected from the class consisting of acetonitrile, acetone, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, tetrahydrofuran, ethyl acetate, and butyl acetate and containing 1 to 10 weight % of water
in a state of suspension being maintained throughout the reaction and
eliminating the alkali metal from the resulting arylsulfonylureide compound alkali metal salt in the same solvent.

摘要翻译： 作为显色剂有用的芳基磺酰基脲化合物通过简单的操作以高收率和高纯度提供。 本发明的制备通式（1）的芳基磺酰基脲化合物（Ar1-SO2NHCONH）n-Ar2（1）的技术，其中Ar1表示芳族残基; Ar2代表二价或三价芳族残基; （2）的芳基磺酰胺碱金属盐：其中B表示碱金属的通式（2）的芳基磺酰胺碱金属盐与通式（3）的芳族异氰酸酯化合物Ar2-（NCO ）n（3）在选自乙腈，丙酮，甲基乙基酮，二乙基酮，甲基异丁基酮，四氢呋喃，乙酸乙酯和乙酸丁酯中的至少一种溶剂中并且含有1至10重量％的水的 在整个反应过程中保持悬浮状态并且在相同溶剂中从得到的芳基磺酰基脲化合物碱金属盐中除去碱金属。