## 4 Conclusions
(compound **3**) (Figure S5); Section S6: FT-IR spectrum of _tert_-butyl-3-iodo-\(1H\)-indazole-1-carboxylate (compound **3**) (Figure S6); Section S7: \({}^{1}\)H NMR spectrum of _tert_-butyl-3-(2-furyl)-\(1H\)-indazole-1-carboxylate (compound **5**) (Figure S7); Section S8: \({}^{13}\)C NMR spectrum of _tert_-butyl-3-(2-furyl)-\(1H\)-indazole-1-carboxylate (compound **5**) (Figure S8); Section S9: ESI-HRMS of _tert_-butyl-3-(2-furyl)-\(1H\)-indazole-1-carboxylate (compound **5**) (Figure S9); Section S10: FT-IR spectrum of ESI-HRMS of _tert_-butyl-3-(2-furyl)-\(1H\)-indazole-1-carboxylate (compound **5**) (Figure S10); Section S11: \({}^{1}\)H NMR spectrum of 3-(2-furyl)-\(1H\)-indazole (compound **6**) (Figure S11); Section S12: \({}^{13}\)C NMR spectrum of 3-(2-furyl)-\(1H\)-indazole (compound **6**) (Figure S12); Section S13: \({}^{1}\)H NMR spectrum of _tert_-butyl-3-(4-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **8**) (Figure S13); Section S14: \({}^{13}\)C NMR spectrum of _tert_-butyl-3-(4-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **8**) (Figure S14); Section S15: ESI-HRMS of _tert_-butyl-3-(4-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **8**) (Figure S15); Section S16: FT-IR spectrum of _tert_-butyl-3-(4-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **8**) (Figure S16); Section S17: \({}^{1}\)H NMR spectrum of 4-(\(1H\)-indazole-3-yl)benzoic acid (compound **9**) (Figure S17); Section S18: \({}^{13}\)C NMR spectrum of 4-(\(1H\)-indazole-3-yl)benzoic acid (compound **9**) (Figure S18); Section S19: ESI-HRMS (TOF-SIMS) of 4-(\(1H\)-indazole-3-yl)benzoic acid (compound **9**) (Figure S19); Section S20: \({}^{1}\)H NMR spectrum of _tert_-butyl-3-(3-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **11**) (Figure S20); Section S21: \({}^{13}\)C NMR spectrum of _tert_-butyl-3-(4-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **11**) (Figure S21); Section S22: ESI-HRMS of _tert_-butyl-3-(3-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **11**) (Figure S22); Section S23: FT-IR spectrum of _tert_-butyl-3-(3-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **11**) (Figure S22); Section S23: FT-IR spectrum of _tert_-butyl-3-(3-(methoxycarbonyl)phenyl)-\(1H\)-indazole-1-carboxylate (compound **11**) (Figure S23); Section S24: \({}^{1}\)H NMR spectrum of 3-(1H-indazole-3-yl)benzoic acid (compound **12**) (Figure S24); Section S25: \({}^{13}\)C NMR spectrum of 3-(1H-indazole-3-yl)benzoic acid (compound **12**) (Figure S25); Section S26: ESI-HRMS (TOF-SIMS) of 3-(1H-indazole-3-yl)benzoic acid (compound **12**) (Figure S26); Section S27: Optimized structures from calculations. **Author Contributions:** Experimental and sample analysis, J.Y., A.Z. and L.J. ; scientific calculation, Y.W. ; material characterization, Q.P. ; sample analysis and funding acquisition, X.W. ; experiment design and methodology, X.L. ; catalytic reaction, W.W.; experiment design and methodology, M.G. ; conceptualization and original draft preparation, Y.S. All authors have read and agreed to the published version of the manuscript. **Funding:** This work was supported by Natural Science Basic Research Program of Shaanxi Province (No. 2020 JM-019). **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Conflicts of Interest:** The authors declare no conflict of interest.