No abstract

In the synthesis of oligophosphane ligands containing the neopentyl framework, the electrophilic activation of an OH group in com pounds of the type R′CH2C(CH2OH)(CH2PR2)2 is a serious problem which may be overcome by BH3 protection of the intrinsically nucleophilic phosphane groups. It is shown that the hydroxy group of HOCH2C(CH2PPh2)3 (1) may be mesylated to yield MsOCH2C(CH2PPh2BH3)3 (3) after protection of 1 as its BH3 derivative (2).

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