Multi-step reaction with 7 steps
1.1: 98 percent / Et3N / CH2Cl2 / 0 °C
2.1: LHMDS / toluene / -78 °C
2.2: toluene / 6 h / 120 °C
2.3: 78 percent / I2; N,N-dimethyl-p-nitroaniline / 1,2-dimethoxy-ethane; H2O / 72 h / 25 °C
3.1: 91 percent / Bu3SnH / benzene / reflux
4.1: CsOH / 2-methyl-propan-2-ol; H2O / 0 °C
4.2: 40 percent / pyridine / diethyl ether / 24 h / 0 °C
5.1: 100 percent / DEAD; Ph3P / benzene / 24 h / 25 °C
6.1: 95 percent / 6N HCl / ethanol / 24 h / 25 °C
7.1: 85 percent / Ph3P; Et3N; HCOOH / Pd(OAc)2 / dioxane / 1 h / 100 °C
With
hydrogenchloride; cesium hydroxide; formic acid; tri-n-butyl-tin hydride; triethylamine; triphenylphosphine; lithium hexamethyldisilazane; diethylazodicarboxylate;
palladium diacetate;
In
1,4-dioxane; ethanol; dichloromethane; water; toluene; tert-butyl alcohol; benzene;
1.1: Acylation / 2.1: Metallation / 2.2: Rearrangement / 2.3: Iodination / 3.1: Reduction / 4.1: Hydrolysis / 4.2: Esterification / 5.1: Acylation / 6.1: Hydrolysis / 7.1: desallylation;
DOI:10.1016/S0040-4039(00)01316-2