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US 9,102,695 B2Granted
Phosphinic acids and their sulfur derivatives and methods for their preparation
AssigneeCytec Technology Corp.
InventorsYuehui Zhou, Jeffrey Charles Henry Dyck, Boban Jakovljevic, Cyril Christian Henri Bourget, Allan James Robertson, Donato Nucciarone
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Abstract
Methods of preparing compounds according to Formula (I): and salts thereof as well as their corresponding phosphine intermediates are provided herein, wherein R1 and R2 are different and each of R1 and R2 is independently selected from an organic radical that branches at the alpha carbon and an organic radical that branches at the beta carbon, and each of X and Y is independently O or S, and wherein said compound is a liquid at room temperature.
Claims9
A method for preparing a compound of Formula (I):
- and salts thereof,
- wherein:
- R1 and R2 are different and each of R1 and R2 is a hydrocarbyl group containing a total of from 5 to 16 carbon atoms, wherein said hydrocarbyl group is chosen from
- (i) —CH2—CHR3R4 where R3 is methyl or ethyl and R4 is alkyl;
- or
- —CR3(CH2R5)R6 where R3 is methyl or ethyl;
- R5 is H or alkyl;
- R6 is alkyl;
- or R5 and R6 and the carbon atoms to which they are bonded form a five or six-membered cycloalkyl ring;
- the method comprising:
- allowing a secondary phosphine to react with
- an oxidizing agent to produce a corresponding phosphinic acid.
9 more elements
Dependencies are inferred from the claim text.