Benzene → N-benzyl-3-(5-ethoxycarbonyl-1,2,3-triazol-1-yl) pyrrolidine

Reaction equation

[CH2:1]([N:8]1[CH2:12][CH2:11][CH:10]([N:13]=[N+:14]=[N-:15])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([C:18]#[C:19][C:20]([O-:22])=[O:21])C.[CH:23]1C=CC=C[CH:24]=1>>[CH2:1]([N:8]1[CH2:12][CH2:11][CH:10]([N:13]2[C:19]([C:20]([O:22][CH2:23][CH3:24])=[O:21])=[CH:18][N:15]=[N:14]2)[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Reactant 3

HCID 241Benzene

HCID 114242213-Azido-1-benzylpyrrolidine

HCID 22377350ETHYLPropiolate

Product 1

HCID 19006033N-benzyl-3-(5-ethoxycarbonyl-1,2,3-triazol-1-yl) pyrrolidineYield 20.6%

Procedure

A mixture of N-benzyl-3-azido-pyrrolidine (5 g, 0.024 mmol) and ethylpropiolate (5 g, 0.051 mmol) in benzene (50 ml) heated under reflux for 48 hrs. Reaction solution was evaporated to dark brown oil, purified on silica gel column using ethylacetate, CHCl3 and methanol to get N-benzyl-3-(5-ethoxycarbonyl-1,2,3-triazol-1-yl) pyrrolidine (1.5 g, 20.6%). 1H NMR (CDCl3) δ: 1.37 (t, 3H), 2.42-2.58 (m, 2H), 2.71-3.01 (m, 3H), 3.20-3.32 (m, 1H), 3.73 (S, 2H), 4.35 (q, 2H), 5.72-5.88 (m, 1H), 7.2-7.4 (m, 5H), 8.12 (S, 1H). N-benzyl-3-(4-ethoxy carbonyl -1,2,3-triazol-1-yl)pyrrolidine (5 g, 68.7%). 1H NMR (CDCl3) δ: 1.40 (t, 3H), 1.8-3.20 (m, 6H), 3.70 (S, 2H), 4.40 (q, 2H), 5.06-5.48 (m, 1H), 7.33 (S, 5H), 8.43 (S, 1H).