Multi-step reaction with 11 steps
1: 1.) dibutyltin oxide; 2.) tetrabutylammonium iodide / 1.) toluene, 15 h, reflux; 2.) 5 h, 100 deg C
2: 98 percent / pyridine / 5 h / Ambient temperature
3: 88 percent / 1 M tetrabutylammonium fluoride / acetonitrile; H2O; tetrahydrofuran / 10 h / Ambient temperature
4: 91.5 percent / CHCl3; pyridine / 96 h / Ambient temperature
5: 94.6 percent / 60 percent NaH / tetrahydrofuran; dimethylformamide; paraffin / 0.08 h / Ambient temperature
6: 88.5 percent / sodium azide, ammonium chloride / dimethylformamide; H2O / 40 h / 110 °C
7: 91.4 percent / 60 percent NaH, tetrabutylammonium iodide / paraffin; tetrahydrofuran / 0.83 h / Ambient temperature
8: 85.6 percent / cupric chloride dihydrate / tetrahydrofuran; ethanol / 1.5 h / Heating
9: 1.) bis(tributyltin)oxide / 1.) toluene, 3 h, reflux; 2.) 3 h, 80 deg C
10: 95.9 percent / NaI / acetone / 14 h / Heating
11: 88.1 percent / 1,8-diazabicyclo<5.4.0>undec-7-ene / tetrahydrofuran / 18 h / Heating
With
pyridine; sodium azide; ammonium chloride; tetrabutyl ammonium fluoride; tetra-(n-butyl)ammonium iodide; sodium hydride; di(n-butyl)tin oxide; 1,8-diazabicyclo[5.4.0]undec-7-ene; bis(tri-n-butyltin)oxide; sodium iodide; copper dichloride;
In
tetrahydrofuran; pyridine; ethanol; chloroform; water; N,N-dimethyl-formamide; acetone; acetonitrile; paraffin;
DOI:10.1016/S0008-6215(00)90842-5