An inexpensive and industrially advantageous method for producing optically active syn-3-(N-substituted-aminomethyl)-4-fluoropyrrolidine which may be an intermediate for producing pharmaceuticals is provided. The present invention relates a method for producing a syn-1-protected-4-fluoro-3-(N-substituted-N-nitrobenzenesulfonyl)pyrrolidine derivative or it's enantiomer, or their salts comprising the process of fluorinating a compound represented by the general formula (6) (in the formula, PG
1
represents a protecting group for an amino group, R
1
represents a C1 to C6 alkyl group which may be substituted or a C3 to C8 cycloalkyl group which may be substituted, and Ns represents a 2-nitrobenzenesulfonyl group or a 4-nitrobenzenesulfonyl group) or it's enantiomer using a nucleophilic fluorinating agent and an organic base having an amidine or guanidine structure.
提供了一种廉价且工业上优势的方法,用于生产光学活性的syn-3-(N-取代
氨甲基)-4-
氟吡咯烷,该化合物可能是生产药物的中间体。本发明涉及一种生产syn-1-保护的-4-
氟-3-(N-取代-N-
硝基苯磺酰基)
吡咯烷衍
生物或其对映体或其盐的方法,包括将通式(6)所代表的化合物(其中,
PG1代表
氨基的保护基,R1代表可取代的C1到C6烷基或可取代的C3到C8环烷基,Ns代表2-
硝基苯磺酰基或4-
硝基苯磺酰基)或其对映体使用亲核
氟化试剂和具有酰胺或
鸟嘌呤结构的有机碱进行
氟化的过程。