| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a BF<SB>4</SB>salt of a 3-amino-2-propenylidene ammonium derivative which is safe, can be used industrially and is useful as an intermediate or a dipyridyl derivative in the friends of pharmaceuticals, pesticides, sensitive materials for electrophotography and dyes. <P>SOLUTION: The new BF<SB>4</SB>salt of 3-amino-2-propenylidene ammonium derivative is provided. <P>COPYRIGHT: (C)2003,JPO |
