Process for the preparation of phosphino compounds

Details Process for the preparation of phosphino compounds Process for the preparation of phosphino compounds

C - Chemistry, Metallurgy

07

F

260/558.05, 260/

C07F 9/32 (2006.01) C07F 9/40 (2006.01) C07F 9/53 (2006.01)

Patent

CA 2012779

HOE 89/F 100 Abstract Process for the preparation of phosphino compounds Phosphorus-containing compounds of the formula (I) (R1)(R2)P(O)-CR3R4-CHR5R6 (I) in which R1 and R2 are alkyl, alkoxy or optionally substituted phenyl, R3 and R5 are H, R, optionally substituted phenyl, ROCO-, RO-CO-RO-, halogen, CN, RO-, RO-RO-R-CO-, H2NCO-, RNHCO- or RRNCO-, in which R is alkyl, R4 and R6 have the same meaning as defined for R1 and R2 or are a divalent radical -CO-R7-CO in which R7 is oxygen, NR* or sulfur, and R* is H, option- ally substituted phenyl or alkyl, are precursors for plant protection agents and fire retardants. According to the invention they can be prepared in high yields and high purity by reacting a compound (R1)(R2)P-OR8, in which R3 is alkyl or optionally substituted phenyl, with an alkene of the formula R3R4C=CR5R6 and at least an equimolar amount of aprotic organic substance such as alcohols, amines, phenols, thiophenols or anilines.

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