Imamoto procedure

Representative procedure - preparation of Smf using Imamoto s procedure. Samarium powder (1.00 g, 6.65 mmol) was placed in a reaction flask under an inert atmosphere and thoroughly degassed THF (55 ml) was added. Iodine (1.41 g,... 

Imamoto and co-workers developed procedure B, which is a one-pot transformation of phosphine oxides into phosphine boranes. The cerium cation plays two roles it coordinates to the phosphoryl group to make the deoxygenation with LiAlH4 possible and it also facilitates the reaction between... 

The chemistry of the secondary phosphine boranes has been expanded in a recent contribution of Imamoto s group/ in which they disclosed a procedure to convert the P-H into a P-halogen bond stereoselectively (Scheme 5.12). 

Gridnev Higashi and Imamoto prepared 51 in 27% yield after recrystallisation as an optically pure compound. Livinghouse and co-workers ° followed a similar procedure to obtain the potentially tridentate ligand precursors 52 and 53. 

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