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1-dicyclohexylphosphinomethyl-2-diphenylphosphinomethybenzene synthesis

2synthesis methods
-

Yield:850894-39-2 65%

Reaction Conditions:

Stage #1: dicyclohexylphosphanewith N,N,N,N,N,N-hexamethylphosphoric triamide;n-butyllithium in tetrahydrofuran;hexane at 25; for 0.5 h;
Stage #2: 1,5-dihydro-benzo[e][1,3,2]dioxathiepine 3,3-dioxide in tetrahydrofuran;hexane at -78 - 20; for 1 h;
Stage #3: lithium diphenylphosphide in tetrahydrofuran;hexane at 60; for 3 h;

References:

Leone, Antonella;Consiglio, Giambattista [Helvetica Chimica Acta,2005,vol. 88,# 2,p. 210 - 215]