Multi-step reaction with 10 steps
1.1: ozone / CH2Cl2 / -78 °C
1.2: PPh3 / CH2Cl2 / -20 °C
1.3: 85 percent / NaH / tetrahydrofuran; CH2Cl2 / -78 °C
2.1: DIBAL / diethyl ether; toluene / -78 - 0 °C
2.2: Rochelle's salt / diethyl ether; toluene; methanol
2.3: 81 percent / MgSO4 / diethyl ether; toluene; methanol
3.1: 94 percent / DMAP; pyridine / CH2Cl2 / 0 - 20 °C
4.1: 100 percent / AcOH; H2O / 2 h
5.1: 87 percent / Pd2(dba)3*CHCl3; (R,R)-DPPBA / tetrahydrofuran / 0 °C
6.1: 72 percent / camphorsulfonic acid / CH2Cl2 / 0 - 20 °C
7.1: 9-borabicyclo[3.3.1]nonane / tetrahydrofuran / 20 °C
7.2: 81 percent / NaBO3 / tetrahydrofuran; H2O
8.1: 87 percent / imidazole / dimethylformamide / 20 °C
9.1: 90 percent / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / CH2Cl2 / 20 °C
10.1: 92 percent / 1,1,1-triacetoxy-1,1-dihydro-1,2-benziodoxol-3(1H)-one / CH2Cl2 / 20 °C
With
pyridine; 1H-imidazole; dmap; tris(dibenzylideneacetone)dipalladium(0) chloroform complex; (R,R)-DPPBA; camphor-10-sulfonic acid; water; diisobutylaluminium hydride; Dess-Martin periodane; ozone; acetic acid; 9-bora-bicyclo[3.3.1]nonane; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
tetrahydrofuran; diethyl ether; dichloromethane; N,N-dimethyl-formamide; toluene;
10.1: Dess-Martin oxidation;
DOI:10.1021/ol026504e