Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 65, Issue 17, Pages 5334-5341Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo000691h
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Funding
- NIGMS NIH HHS [GM 58160, GM 34917] Funding Source: Medline
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Functionalized dicyclohexyl- and di-tert-butylphosphinobiphenyl Ligands are prepared by the reaction of arylmagnesium halides with benzyne, followed by the addition of a chlorodialkylphosphine. This one-pot procedure is considerably less expensive and time-consuming than the method used previously to prepare such ligands. The cast of introducing the dicyclohexylphosphine group can be decreased by preparing chlorodicyclohexylphosphine from PCl3 and cyclohexylmagnesium chloride, and using the reagent without further purification. The new method is significant, as a variety of ligands can be produced in useful amounts by a procedure that is simple, with starting materials that are relatively inexpensive, and, in most cases, without chromatographic purification.
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