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ChemicalBook CAS DataBase List BIS(4-METHOXYPHENYL)PHOSPHINIC ACID
20434-05-3

BIS(4-METHOXYPHENYL)PHOSPHINIC ACID synthesis

8synthesis methods
-

Yield:20434-05-3 89%

Reaction Conditions:

Stage #1: 1-bromo-4-methoxy-benzenewith tris(dibenzylideneacetone)dipalladium(0) chloroform complex;anilinium hypophosphite;triethylamine;4,5-bis(diphenylphosphino)-9,9-dimethylxanthene in tetrahydrofuran at 120;Microwave irradiation;Inert atmosphere;
Stage #2: with sodium hydroxide in diethyl ether;lithium hydroxide monohydrate;
Stage #3: with hydrogenchloride in lithium hydroxide monohydrate;

References:

Kalek, Marcin;Stawinski, Jacek [Tetrahedron,2009,vol. 65,# 50,p. 10406 - 10412] Location in patent:experimental part

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