In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Facile and efficient syntheses of novel (S)- and (R)-3-fluoropyrrolidines and 3,3-difluoropyrrolidine, published in 1995-01-31, which mentions a compound: 136725-55-8, mainly applied to fluoropyrrolidine enantiomeric synthesis; difluoropyrrolidine enantiomeric; pyrrolidine fluoro difluoro, Synthetic Route of C4H9ClFN.
Novel enantiomeric 3-fluoropyrrolidines and 3,3-difluoropyrrolidine were obtained in high yield starting from the enantiomerically pure and com. available (2S,4R)-4-hydroxyproline. Spray-dried potassium fluoride and diethylaminosulfur trifluoride were used to introduce one or two fluorine atoms, resp.
Here is a brief introduction to this compound(136725-55-8)Synthetic Route of C4H9ClFN, if you want to know about other compounds related to this compound(136725-55-8), you can read my other articles.
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem