Provided is a method for producing an alkenyl phosphorus compound which can produce an alkenyl phosphorus compound efficiently even with a smaller amount of a catalyst used than that used conventionally, and further which can maintain catalytic activity to produce an alkenyl phosphorus compound in high yield even at a larger reaction scale, and which can also be applied to quantity synthesis at an industrial scale using a conventional batch reactor or continuous reactor. A method for producing an alkenyl phosphorus compound, comprising: a step of reacting a compound represented by the following formula (1): ##STR00001## [In formula (1), R.sup.1 represents OR.sup.3 or R.sup.3, R.sup.2 represents OR.sup.4 or R.sup.4, and R.sup.3 and R.sup.4 represent, for example, each independently a substituted or unsubstituted alkyl group.] with a compound represented by the following formula (2): ##STR00002## [In formula (2), R.sup.5 represents, for example, a hydrogen atom, or a substituted or unsubstituted alkyl group.] to produce the phosphorus alkenyl compound presented by at least any of the following formulas (3a) or (3b): ##STR00003## [In formulas (3a) and (3b), R.sup.1 and R.sup.2 have the same meaning as defined in formula (1), and R.sup.5 has the same meaning as defined in formula (2).], In which the compound represented by formula (1) is reacted with the compound represented by formula (2) using a transition metal catalyst, and a phosphorus oxo acid compound having an intramolecular PH bond.

A carbon catalyst has improved catalytic activity, and an electrode and a battery include the carbon catalyst. A carbon catalyst includes a metal and phosphorus atoms, wherein a ratio of a concentration (atomic %) of the phosphorus atoms exhibiting a peak having a peak top within a range of 132.50.3 eV and having a full width at half maximum of 2.00.5 eV, which is obtained by peak separation of a phosphorus atom P2p peak, with respect to a concentration (atomic %) of carbon atoms in X-ray photoelectron spectroscopic measurement is 0.0005 or more.

Provided is a method for producing an alkenyl phosphorus compound which can produce an alkenyl phosphorus compound efficiently even with a smaller amount of a catalyst used than that used conventionally, and further which can maintain catalytic activity to produce an alkenyl phosphorus compound in high yield even at a larger reaction scale, and which can also be applied to quantity synthesis at an industrial scale using a conventional batch reactor or continuous reactor.

A method for producing an alkenyl phosphorus compound, comprising: a step of reacting a compound represented by the following formula (1):

##STR00001## [In formula (1), R.sup.1 represents OR.sup.3 or R.sup.3, R.sup.2 represents OR.sup.4 or R.sup.4, and R.sup.3 and R.sup.4 represent, for example, each independently a substituted or unsubstituted alkyl group.] with a compound represented by the following formula (2):

R.sup.5CCH(2) [In formula (2), R.sup.5 represents, for example, a hydrogen atom, or a substituted or unsubstituted alkyl group.] to produce the phosphorus alkenyl compound presented by at least any of the following formulas (3a) or (3b):

##STR00002## [In formulas (3a) and (3b), R.sup.1 and R.sup.2 have the same meaning as defined in formula (1), and R.sup.5 has the same meaning as defined in formula (2).],

In which the compound represented by formula (1) is reacted with the compound represented by formula (2) using a transition metal catalyst, and a phosphorus oxo acid compound having an intramolecular PH bond.

A method for sulphation and phosphorylation of a wooden body to impart anti-flame properties to the substrate wherein at least one phosphonic acid of the formula (I) is used PO(OH).sub.2RPO(OH).sub.2 as a catalyst for sulphation and phosphorylating agent, and the relative wooden body.