iron (III) perchlorate T=100°C; 0.5 h; neat (no solvent);

carbon monoxide; hydrogen; dicobalt octacarbonyl T=210°C; P=124116 Torr;

1: 1.) NaH, 2.) n-BuLi / 1.) THF, DMF, 2.) THF, Et2O, -78 deg C, 50 min 2: 1.) n-butyllithium, 2.) copper(I) cyanide, 3.) boron trifluoride etherate / 2.) isopropylmagnesium chloride / 1.) THF, hexane, -78 deg C, 10 min, 2.) diisopropyl sulfide, THF, -78 deg C, 15 min, 3.) THF, diisopropyl sulfide, hexane, -78 deg C, 13 min, - 45 deg C, 15 min, 0 deg C, 10 min View Scheme

n-butyllithium; boron trifluoride diethyl etherate; copper (I) cyanide; isopropylmagnesium chloride 1.) THF, hexane, -78 deg C, 10 min, 2.) diisopropyl sulfide, THF, -78 deg C, 15 min, 3.) THF, diisopropyl sulfide, hexane, -78 deg C, 13 min, - 45 deg C, 15 min, 0 deg C, 10 min; Yield given. Multistep reaction;

(i) NaH, (ii) /BRN= 385801/; Multistep reaction;

in acetonitrile 21 h; UV-irradiationInert atmosphere;

silver(l) oxide in dichloromethane 15 h; Ambient temperature;

sodium hydroxide; benzene T=130°C;

T=90 - 100°C;

(i) Mg, (ii) FeCl2, (iii) MeOH; Multistep reaction;