1: 38 percent / 90percent aq. AcOH, Zn / 1 h / Ambient temperature 2: 78.4 percent / diethyl ether; methanol / 1 h / Ambient temperature 3: 71.4 percent / AcOK, H2 / 5percent Pd/C / methanol / Ambient temperature 4: 63 percent / N,N-dicyclohexylcarbodimide / dioxane / 4 h / Ambient temperature 5: 24 percent / 1N aq. NaOH / methanol; acetonitrile / 0.5 h / Ambient temperature 6: 6.1 mg / H2 / 5percent Pd/C / methanol / 3 h / Ambient temperature 7: 39 percent / N,N-dicyclohexylcarbodimide / dioxane / 15 h 8: 60 percent / AlCl3 / CH2Cl2 / 2 h / Ambient temperature View Scheme

1: 38 percent / 90percent aq. AcOH, Zn / 1 h / Ambient temperature 2: 78.4 percent / diethyl ether; methanol / 1 h / Ambient temperature 3: 71.4 percent / AcOK, H2 / 5percent Pd/C / methanol / Ambient temperature 4: 63 percent / N,N-dicyclohexylcarbodimide / dioxane / 4 h / Ambient temperature 5: 24 percent / 1N aq. NaOH / methanol; acetonitrile / 0.5 h / Ambient temperature 6: 6.1 mg / H2 / 5percent Pd/C / methanol / 3 h / Ambient temperature 7: 39 percent / N,N-dicyclohexylcarbodimide / dioxane / 15 h View Scheme

Multi-step reaction with 8 steps 1: Zn, 90percent aq. AcOH / Ambient temperature2: diethyl ether; methanol3: H2, AcOK / 5percent Pd/C / methanol4: DCC / dioxane; CH2Cl2 5: 0.2 N aq. NaOH / methanol; acetonitrile6: H2 / 5percent Pd/C7: 39 percent / DCC / dioxane8: 100 percent / AlCl3, EtSH  

Multi-step reaction with 4 steps 1: 38 percent / 90percent aq. AcOH, Zn / 1 h / Ambient temperature2: 78.4 percent / diethyl ether; methanol / 1 h / Ambient temperature3: 71.4 percent / AcOK, H2 / 5percent Pd/C / methanol / Ambient temperature4: 63 percent / N,N-dicyclohexylcarbodimide / dioxane / 4 h / Ambient temperature  

With  acetic acid; zinc 1 h;  Ambient temperature;   

Multi-step reaction with 2 steps 1: 38 percent / 90percent aq. AcOH, Zn / 1 h / Ambient temperature2: 78.4 percent / diethyl ether; methanol / 1 h / Ambient temperature  

Multi-step reaction with 2 steps 1: 76 percent / N,N-dicyclohexylcarbodiimide / dioxane / 20 h / Ambient temperature2: 5.2 percent / thallium(III) trinitrate / 18 h / 4 °C  

Multi-step reaction with 2 steps 1: 76 percent / N,N-dicyclohexylcarbodiimide / dioxane / 20 h / Ambient temperature2: 5.2 percent / thallium(III) trinitrate / 18 h / 4 °C  

Multi-step reaction with 5 steps 1: 38 percent / 90percent aq. AcOH, Zn / 1 h / Ambient temperature2: 78.4 percent / diethyl ether; methanol / 1 h / Ambient temperature3: 71.4 percent / AcOK, H2 / 5percent Pd/C / methanol / Ambient temperature4: 63 percent / N,N-dicyclohexylcarbodimide / dioxane / 4 h / Ambient temperature5: 24 percent / 1N aq. NaOH / methanol; acetonitrile / 0.5 h / Ambient temperature