The invention concerns synthesis of functionalized organosilicium compounds comprising at least one activated azo group of formula (I): [(G
0
)
3
SiO
1/2
]
m
[(G
0
)
2
SiO
2/2
]
n
[G
0
SiO
3/2
]
o
[SiO
4/2
]
p
[(G
2
)
a
(G
1
)
a′
(Z-CO—HN═NH—CO-A)SiO
(3-a-a′)/2
]. Said compounds can for example be a mixture of silane species of formula (i
a
): (C
2
H
5
O)
3
Si—(CH
2
)
3
—NH—CO—N═N—COOC
2
H
3
; with siloxane species of formulae: (2i.1
a
): [(CH
3
)
3
SiO
1/2
][(C
2
H
5
O)
2
(CH
2
)
3
—NH—CO—N═N—COOC
2
H
5
}SiO
1/2
] et (2i.2
a
): [(CH
3
)
3
SiO
1/2
]
2
[(C
2
H
5
O)(CH
2
)
3
—NH—CO—N═N—COOC
2
H
5
}SiO
2/2
]. The invention also concerns the method for preparing said compounds (I), which consists in using at least one hydrazino precursor (II) (—HN—NH—) of compound (I), oxidizing the precursor (II) into an azo group for the compound (I) using at least one oxidizing agent (Ox) and at least one vase (B), said method consisting in selecting the base B among mineral bases and Ox among halogens, cyanurated compounds and chlorinated compounds and mixtures thereof, and in using a supplementary reagent selected among silanes (alone or mixed together) of formula (III): (G
o
)
4-p1
Si(G
2′
)
p1
[or example, (CH
3
)
3
(C
2
H
5
O)Si].
该发明涉及合成具有至少一个激活偶氮基团的官能化
有机硅化合物,其
化学式为(I):[(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a′(Z-CO—HN═NH—CO-A)SiO(3-a-a′)/2]。所述化合物可以是
化学式(ia)的
硅烷物种的混合物:(
C2H5O)3Si—(
CH2)3—NH—CO—N═N—COOC2H3;以及
化学式(2i.1a)和(2i.2a)的
硅氧烷物种。该发明还涉及制备上述化合物(I)的方法,其包括使用至少一种化合物(I)的双
肼前体(II)(—HN—NH—),将前体(II)氧化为化合物(I)的偶氮基,使用至少一种氧化剂(Ox)和至少一种碱(B),其中选择碱B为矿物碱,选择氧化剂Ox为卤素、三氮化合物和
氯化合物及其混合物,使用另选的辅助试剂,选择自
化学式(III)的
硅烷(单独使用或混合使用):(Go)4-p1Si(G2′)p1[例如,(
CH3)3( )Si]。