1.1
Reagents:
Oxalyl chloride
Catalysts:
Dimethylformamide
Solvents:
Dichloromethane
;
0.08 h, 0 °C; 0 °C → 22 °C; 1 h, 22 °C
1.2
Reagents:
Butyllithium
Solvents:
Tetrahydrofuran
,
Hexane
;
0.25 h, 0 °C; 0.5 h, 0 °C; 0 °C → -78 °C
1.3
Solvents:
Tetrahydrofuran
;
0.25 h, -78 °C; 0.5 h, -78 °C; -78 °C → 22 °C; 3 h, 22 °C; 22 °C → 0 °C
1.4
Reagents:
Ammonium chloride
Solvents:
Water
1.5
Reagents:
Acetic acid
;
0.25 h, 0 °C → 22 °C
2.1
Reagents:
Methanesulfonic acid, 1,1,1-trifluoro-, anhydride with B,B-dibutylborinic acid
Solvents:
Dichloromethane
;
0.08 h, 0 °C; 0 °C → 22 °C; 0.25 h, 22 °C
2.2
Reagents:
Diisopropylethylamine
;
0.08 h, 22 °C; 0.5 h, 22 °C; 22 °C → -78 °C
2.3
Solvents:
Dichloromethane
;
0.75 h, -78 °C; 1 h, -78 °C; -78 °C → 0 °C; 4 h, 0 °C
2.4
Solvents:
Water
;
pH 7
2.5
Reagents:
Hydrogen peroxide
Solvents:
Methanol
,
Water
;
1 h, 0 °C → 22 °C
3.1
Reagents:
Lithium borohydride
Solvents:
Methanol
,
Tetrahydrofuran
;
0.08 h, 0 °C; 0.5 h, 0 °C; 0 °C → 22 °C; 2 h, 22 °C
3.2
Reagents:
Ammonium chloride
Solvents:
Water
4.1
Reagents:
Oxygen
Catalysts:
Palladium diacetate
,
4,5-Diazafluoren-9-one
Solvents:
Acetic acid
,
1,4-Dioxane
;
0.25 h, 22 °C; 22 °C → 60 °C; 48 h, 60 °C; 60 °C → 22 °C
5.1
Reagents:
Potassium carbonate
Solvents:
Methanol
,
Water
;
18 h, 22 °C
5.2
Reagents:
Acetic acid
Solvents:
Ethyl acetate
;
pH 5
参考文献:
Developing Neolignans as Proangiogenic Agents: Stereoselective Total Syntheses and Preliminary Biological Evaluations of the Four Guaiacylglycerol 8-O-4'-Coniferyl Ethers
Buckler, Joshua N.; et al, ACS Omega, 2017, 2(10), 7375-7388