Multi-step reaction with 18 steps
1: 100 percent / TEA; DMAP / CH2Cl2
2: 93 percent / diethyl ether / -65 - 0 °C
3: 97 percent / PPTS / ethanol / 80 °C
4: 100 percent / TEA; DMAP / CH2Cl2 / 60 °C
5: 98 percent / TEA; DMAP / CH2Cl2
6: 96 percent / TBAF / tetrahydrofuran
7: 93 percent / EDA / dimethylsulfoxide / 0 °C
8: 98 percent / AgNO3; pyridine / acetonitrile
9: 78 percent / n-BuLi; BF3*OEt2 / tetrahydrofuran / -78 °C
10: 99 percent / H2; quinoline / Lindlar cat. / methanol
11: 98 percent / TEA; DMAP / CH2Cl2
12: 91 percent / TBAF / tetrahydrofuran / 50 °C
13: 75 percent / (Bu3Sn)2O; Zn(OTf)2O / toluene / Heating
14: 100 percent / TEA; DMAP / CH2Cl2
15: 93 percent / PhSH; ZnCl2 / CH2Cl2 / 0 °C
16: 98 percent / K2CO3 / methanol; CH2Cl2
17: 99 percent / n-BuLi; BF3*OEt2 / -78 °C
18: 100 percent / H2; quinoline / Lindlar catalyst / ethyl acetate
With
pyridine; quinoline; diazoacetic acid ethyl ester; dmap; n-butyllithium; TEA; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; hydrogen; pyridinium p-toluenesulfonate; zinc trifluoromethanesulfonate; potassium carbonate; silver nitrate; thiophenol; bis(tri-n-butyltin)oxide; zinc(II) chloride;
Lindlar's catalyst; Lindlar catalyst;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; dimethyl sulfoxide; ethyl acetate; toluene; acetonitrile;
9: Yamaguchi coupling reaction;
DOI:10.1016/S0040-4039(00)02281-4