Method for production of 1,3,2-dioxaphospholes

Details Method for production of 1,3,2-dioxaphospholes Method for production of 1,3,2-dioxaphospholes

C - Chemistry, Metallurgy

07

F

260/457.1, 260/3

C07F 9/40 (2006.01) C07F 9/6571 (2006.01) C07F 9/6574 (2006.01)

Patent

CA 1260004

Abstract of the disclosure The invention relates to a method of producing a 1,3,2-dioxaphosphole of the formula [I]B Image [I] B wherein Image represents a benzene ring which may be substituted and R repre- sents an aryl, alkoxy or aralkyloxy group which may be substituted, which comprises reacting a catechol compound of the formula [II]B Image [II]B wherein Image is as defined above, with a compound of the formula [III]B Image [III]B wherein X is a halogen atom and R is as defined above, at a temperature not higher than about 30°C in the presence of a base. The compounds of formula [I]B are useful, for example, as neutral catalysts in deriving cephalosporin anti- biotics, which have important value in the treatment of bacterial diseases.

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