| 摘要 |
<p>A method of synthesizing in a high yield the target fluorine compound having a geminal-difluoro structure by subjecting an easily available carbonyl compound to a two-stage reaction. A compound (1) such as ethyl 4-oxocyclohexanecarboxylate is reacted with either a compound represented by the formula X-Z, such as phosphorus pentachloride, or a compound represented by the formula Z2O (wherein Z is a monovalent group which gives a leaving group of the structure -OZ; and X is chlorine, bromine, or iodine). Subsequently, a fluorinating agent which generates a fluorine anion, such as HF, is caused to act on the reaction product to obtain a fluorine compound (2) such as ethyl 4,4-difluorocyclohexanecarboxylate.</p> |
