hydrogen; tin(ll) chloride; ((2S,4S)-N-(tert-butoxycarbonyl)-4-(diphenylphosphino)-2-{(diphenylphosphino)methyl}pyrrolidine)PtCl2 T=60°C; P=139630 Torr; 240 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

in 1-methyl-pyrrolidin-2-one

in N,N-dimethyl-formamide T=145°C; 5 h;

hydrazine in methanol 2 h; Heating;

pyridinium p-toluenesulfonate in acetone 5 h; Heating;

pyridinium p-toluenesulfonate in acetone 5 h; Heating;