Multi-step reaction with 6 steps
1: 91 percent / CSA / acetonitrile / 0.5 h
2: 83 percent / 2,6-lutidine / acetonitrile / 16 h / Heating
3: 79 percent / NaBH3CN, molecular sieve 3 Angstroem, trifluoroacetic acid / tetrahydrofuran / 0 °C
4: 1) 5 N NaOH / 1) 5 deg C, 30 min., 2) 1 h
5: 75 percent / Bu3SnH, AIBN / toluene / 110 °C
6: 1) 1,5,7-triazabicyclo<4.4.0>dec-5-ene, 2) HgO, HgCl2 / 1) triphenylphosphan-rhodium chloride / 1) EtOH, H2O, 10 h, reflux, 2) acetone, H2O
With
2,6-dimethylpyridine; sodium hydroxide; 2,2'-azobis(isobutyronitrile); 3 A molecular sieve; camphor-10-sulfonic acid; 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine; tri-n-butyl-tin hydride; sodium cyanoborohydride; trifluoroacetic acid; mercury dichloride; mercury(II) oxide;
triphenylphosphan-rhodium chloride;
In
tetrahydrofuran; toluene; acetonitrile;